Книга I: история любви 18
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| #12 BIS-TOM; 4-METHYL-2,5-bis-(METHYLTHIO)AMPHETAMINE SYNTHESIS: A solution of 9.0 g 2,5-dibromotoluene in 50 mL petroleum ether was magnetically stirred under a He atmosphere. To this there was added 50 mL of a 1.6 M hexane solution of butyllithium, and the exothermic reaction, which produced a granular precipitate, was allowed to stir for 12 h. The mixture was cooled to 0 deg C and there was then added 7.5 g dimethyldisulfide. There was a heavy precipitate formed, which tended to become lighter as the addition of the disulfide neared completion. After 20 min additional stirring, the reaction mixture was poured into H2O that contained some HCl. The phases were separated and the aqueous phase extracted with 50 mL Et2O. The organic phase and extract were combined, washed with dilute NaOH, and then with H2O. After drying over anhydrous K2CO3, the solvent was removed under vacuum and the residue distilled to give a fraction that boiled at 75-85 deg C at 0.3 mm/Hg and weighed 5.3 g. This was about 80% pure 2,5-bis-(methylthio)toluene, with the remainder appearing to be the monothiomethyl analogues. A completely pure product was best obtained by a different, but considerably longer, procedure. This is given here only in outline. The phenolic OH group of 3-methyl-4-(methylthio)phenol was converted to an SH group by the thermal rearrangement of the N,N-dimethylthioncarbamate. The impure thiophenol was liberated from the product N,N-dimethylthiolcarbamate with NaOH treatment. The separation of the phenol/thiophenol mixture was achieved by a H2O2 oxidation to produce the intermediate 3-methyl-4-methylthiophenyldisulfide. This was isolated as a white crystalline solid from MeOH, with a mp of 78-79 deg C. Anal. (C16H18S4) C,H. It was reduced with zinc in acetic acid, and the resulting thiophenol (a water-white liquid which was both spectroscopically and microanalytically correct) was methylated with methyl iodide and KOH in MeOH to give the desired product, 2,5-bis-(methylthio)toluene, free of any contaminating mono-sulfur analogues. A solution of 3.9 g of 2,5-bis-(methylthio)toluene in 20 mL acetic acid was treated with a crystal of iodine followed by the addition of 3.5 g elemental bromine. This mixture was heated on the steam bath for 1 h, which largely discharged the color and produced a copious evolution of HBr. Cooling in an ice bath produced solids that were removed by filtration. Recrystallization from IPA gave 1.9 g of 2,5-bis-(methylthio)-4-bromotoluene as a white crystalline solid with a mp of 133-134 deg C. Anal. (C9H11BrS2) C,H. An alternate synthesis of this intermediate was achieved from 1,4-dibromobenzene which was converted to the 1,4-bis-(methylthio)benzene (white crystals with a mp of 83.5-84.5 deg C) with sodium methylmercaptide in hexamethylphosphoramide. This was dibrominated to 2,5-dibromo-1,4-bis-(methylthio)benzene in acetic acid (white platelets from hexane melting at 195-199 deg C). This, in Et2O solution, reacted with BuLi to replace one of the bromine atoms with lithium, and subsequent treatment with methyl iodide gave 2,5-bis-(methylthio)-4-bromotoluene as an off-white solid identical to the above material (by TLC and IR) but with a broader mp range. A solution of 2.4 g 2,5-bis-(methylthio)-4-bromotoluene in 100 mL anhydrous Et2O, stirred magnetically and under a He atmosphere, was treated with 10 mL of a 1.6 M solution of butyllithium in hexane. After stirring for 10 min there was added 2.5 mL N-methylformanilide which led to an exothermic reaction. After another 10 min stirring, the reaction mixture was added to 100 mL dilute HCl, the phases were separated, and the aqueous phase extracted with 2x50 mL Et2O. The combined organic phase and extracts were dried over anhydrous K2CO3, and the solvent removed under vacuum. The partially solid residue was distilled at 140-150 deg C at 0.2 mm/Hg to give a crystalline fraction that, after recrystallization from 15 mL boiling IPA gave 2,5-bis-(methylthio)-4-methylbenzaldehyde as a yellow-brown solid which weighed 1.1 g and had a mp of 107-109 deg C. An analytical sample from MeOH melted at 110-111 deg C with an excellent IR and NMR. Anal. (C10H12OS2) C,H. An alternate synthesis of this aldehyde employs the 2,5-bis-(methylthio)toluene described above. A CH2Cl2 solution of this substituted toluene containing dichloromethyl methyl ether was treated with anhydrous AlCl3, and the usual workup gave a distilled fraction that spontaneously crystallized to the desired aldehyde but in an overall yield of only 11% of theory. To a solution of 0.5 g 2,5-bis-(methylthio)-4-methylbenzaldehyde in 15 mL nitroethane there was added 0.15 g anhydrous ammonium acetate and the mixture was heated on the steam bath for 1 h. The excess solvent was removed under vacuum and the residue was dissolved in 10 mL boiling MeOH. This solution was decanted from a little insoluble residue, and allowed to cool to ice bath temperature yielding, after filtering and drying to constant weight, 0.55 g of 1-[2,5-bis-(thiomethyl)-4-methylphenyl]-2-nitropropene as pumpkin-colored crystals with a mp of 90-91 deg C. This was not improved by recrystallization from EtOH. Anal. (C12H15NO2S2) C,H. A cooled, stirred solution of 0.5 g LAH in 40 mL THF was put under an inert atmosphere, cooled to 0 deg C with an external ice bath, and treated with 0.42 mL 100% H2SO4, added dropwise. A solution of 0.5 g 1-[2,5-bis-(thiomethyl)-4-methylphenyl]-2-nitropropene in 20 mL anhydrous THF was added over the course of 5 min, and the reaction mixture held at reflux for 30 min on the steam bath. After cooling again to ice temperature, the excess hydride was destroyed by the addition of IPA and the inorganics were converted to a loose, white filterable form by the addition of 1.5 mL 5% NaOH. These solids were removed by filtration and the filter cake was washed with 2x50 mL IPA. The combined filtrate and washings were stripped of solvent under vacuum to give a residue that was a flocculant solid. This was suspended in dilute H2SO4 and extracted with 2x50 mL CH2Cl2, and the combined organics extracted with 2x50 mL dilute H3PO4. The aqueous extracts were made basic, and the product removed by extraction with 2x75 mL CH2Cl2. After removal of the solvent under vacuum, the residue was distilled at 126-142 deg C at 0.2 mm/Hg to give 0.2 g of product which crystallized in the receiver. This was dissolved in 1.5 mL hot IPA, neutralized with 4 drops of concentrated HCl, and diluted with 3 mL anhydrous Et2O to give, after filtering and air drying, 0.2 g. of 2,5-bis-(methylthio)-4-methylamphetamine hydrochloride (BIS-TOM) as white crystals with a mp of 228-229 deg C. Anal. (C12H20ClNS2) C,H. DOSAGE: greater than 160 mg. DURATION: unknown. QUALITATIVE COMMENTS: (with 160 mg) I was vaguely aware of something in the latter part of the afternoon. A suggestion of darting, physically (when going to sleep), but nothing at the mental level. This is as high as I will go. EXTENSIONS AND COMMENTARY: It is reasonable, in retrospect, to accept that BIS-TOM is not an active compound. The replacement of the 2-position oxygen of DOM with a sulfur atom (to give 2-TOM) dropped the potency by a factor of 15x, and the replacement of the 5-position oxygen with a sulfur atom (to give 5-TOM) dropped the potency by a factor of about 10x. It would be a logical calculation that the replacement of both oxygen atoms with sulfur might drop the potency by a factor of 150x. So, with DOM being active at maybe 5 milligrams, a logical prediction of the active level of BIS-TOM would be 750 milligrams. And maybe this would be the right level, but with the hints of neurological disturbance that seemed to be there at 160 mg, there was no desire to go up by a factor of five again. The rewards would simply not be worth the risks. The 2-carbon analogue, 2C-BIS-TOM, was prepared from the intermediate aldehyde above, first by reaction with nitromethane to give the nitrostyrene as tomato-colored crystals from EtOAc, mp 145-146 deg C. Anal. (C11H13NO2S2) C,H. This was reduced with AH to give 2,5-bis-(methylthio)-4-methylphenethylamine hydrochloride as ivory-colored crystals with a mp of 273-277 deg C. Although there are many interesting psychedelic drugs with sulfur atoms in them (the TOM's, the TOET's, the ALEPH's and all of the 2C-T's), there just aren't many that contain two sulfur atoms. BIS-TOM bombed out, and 2C-BIS-TOM remains untried, but will probably also fail, as the phenethylamines are rarely more potent than the corresponding amphetamines. This leaves 2C-T-14 as the remaining hope, and its synthesis is still underway. #13 BOB; beta-METHOXY-2C-B; 4-BROMO-2,5-beta-TRIMETHOXYPHENETHYLAMINE SYNTHESIS: To a vigorously stirred suspension of 2.1 g 4-bromo-2,5-dimethoxy-beta-nitrostyrene [from 4-bromo-2,5-dimethoxybenzaldehyde and nitromethane in acetic acid with ammonium acetate as a catalyst, mp 157-158 deg C, anal. (C10H10BrNO4) C,H] in 20 mL anhydrous MeOH, there was added a solution of sodium methoxide in MeOH (generated from 0.5 g metallic sodium in 20 mL anhydrous MeOH). After a few min there was added 10 mL acetic acid (no solids formed) followed by the slow addition of 50 mL of H2O. A cream-colored solid was produced, which was removed by filtration and washed well with H2O. After air drying the product, 1-(4-bromo-2,5-dimethoxyphenyl)-1-methoxy-2-nitroethane, weighed 2.0 g. An analytical sample from MeOH was off-white in color and had a mp of 119-120 deg C. Anal. (C11H14BrNO5) C,H. A solution of LAH (15 mL of 1 M solution in THF) was diluted with an equal volume of anhydrous THF, and cooled (under He) to 0 deg C with an external ice bath. With good stirring there was added 0.38 mL 100% H2SO4 dropwise, to minimize charring. This was followed by the addition of 1.0 g 1-(4-bromo-2,5-dimethoxyphenyl)-1-methoxy-2-nitroethane as a solid over the course of 5 min. After an hour of stirring at 0 deg C, the temperature was brought up to a gentle reflux on the steam bath for 30 min. There was no vigorous exothermic reaction seen, unlike that with the syntheses of BOD, BOH and BOM. The reaction mixture was cooled again to 0 deg C, and the excess hydride was destroyed by the cautious addition of IPA. This was followed by sufficent dilute aqueous NaOH to give a white granular character to the oxides, and to assure that the reaction mixture was basic. The reaction mixture was filtered, and the filter cake washed first with THF fol-lowed by IPA. The combined filtrate and washings were stripped of solvent under vacuum and dissolved in dilute H2SO4, with the apparent generation of yellow solids. This was washed with 2x50 mL CH2Cl2, and the aqueous phase made basic with NaOH. This was extracted with 2x50 mL CH2Cl2, and the pooled extracts were stripped of solvent under vacuum. The residue was distilled at 130-150 deg C at 0.2 mm/Hg to give 0.2 g of product as a clear white oil. This fraction was dissolved in 10 mL IPA, and neutralized with 4 drops concentrated HCl. The addition of 30 mL anhydrous Et2O allowed the formation of 4-bromo-2,5,beta-trimethoxyphenethylamine hydrochloride (BOB) as a fine white crystalline product. This was removed by filtration, washed with Et2O, and air dried. There was obtained 0.1 g white crystals with a mp of 187-188 deg C. Anal. (C11H17BrClNO3) C,H. DOSAGE: 10 - 20 mg. DURATION: 10 - 20 h. QUALITATIVE COMMENTS: (with 10 mg) I don't know if it was me this day, or if it was the chemical, but I got into a granddaddy of a paranoid, sociopathic snit, without feeling and without emotion. I was indifferent to everything. Later on, there was some improvement, with body tingling (good, I'm pretty sure) and a sense of awareness (good, I guess) but I still canceled my evening dinner company. All in all, pretty negative. (with 10 mg) I had to get away and into myself, so I weeded in the vegetable garden for almost an hour. Then I lay down in the bedroom, and enjoyed a magnificent vegetable garden, in Southern France, in my mind's eye. An extraordinary zucchini. And the weeds had all been magically pulled. In another couple of hours a neurological over-stimulation became apparent, and I spent the rest of the day defending myself. In the evening, I took 100 milligrams phenobarbital which seemed to smooth things just enough. Too bad. Nice material, otherwise. (with 15 mg) The erotic was lustful, but at the critical moment of orgasm, the question of neurological stability became quite apparent. Does one really let go? Everything seemed a bit irritable. The tinnitus was quite bad, but the excitement of the rich altered place I was in was certainly worth it all. Through the rest of the day, I became aware of how tired I was, and how much I wanted to sleep, and yet how scared I was to give myself over to sleep. Could I trust the body to its own devices without me as an overseeing caretaker? Let's risk it. I slept. The next day there was a memory of this turmoil. Clearly the first part of the experience might have been hard to define, but it was quite positive. But the last part makes it not really worth while. EXTENSIONS AND COMMENTARY: This compound, BOB, is the most potent of the BOX series. And yet, as with all of the members of this family, there are overtones of physical concern, and of some worry as to the integrity of the body. There may well be a separation of activity with the two optical isomers, but there is not a tremendous push to explore this particular family much further. They can't all be winners, I guess. What would be the activities of compounds with a sulfur instead of an oxygen at the beta-oxygen position? What would be the nature of action if there were an alpha-methyl group, making all of these into amphetamine derivatives? Or what about both a sulfur and a methyl group? And what about the isomers that are intrinsic to all of this, the threo- and the erythro- and the "D's" and the "L's"? All this is terra incognita, and must someday be looked into. It is chemically simple, and pharmacologically provocative. Someone, somewhere, someday, answer these questions! #14 BOD; beta-METHOXY-2C-D; 4-METHYL-2,5,beta-TRIMETHOXYPHENETHYLAMINE SYNTHESIS: A solution of 39.6 g 1-(2,5-dimethoxy-4-methylphenyl)-2-nitrostyrene (see recipe for 2C-D for its preparation) in 300 mL warm MeOH was prepared. Separately, a solution of 9 g elemental sodium in 150 mL MeOH was also prepared. This sodium methoxide solution was added to the well-stirred nitrostyrene solution, which resulted in a dramatic loss of color. There was then added 75 mL acetic acid, and all was poured into 2 L H2O. This was extracted with 3x100 mL CH2Cl2. The pooled extracts were stripped of solvent, and the 35 g of residue was treated with 5 mL MeOH, allowed to stand for a short while, decanted from some insoluble residue, and the separated clear solution kept at 0 deg C overnight. There was the deposition of a yellow crystalline product which, after removal by filtration and air drying, weighed 9.7 g. Recrystallization from 25 mL MeOH gave, after filtering and drying, 8.4 g of canary-yellow crystals of 1-(2,5-dimethoxy-4-methylphenyl)-1-methoxy-2-nitroethane with a mp of 78-79 deg C. Evaporation of the mother liquors from the filtration of the first crop yielded 3.8 g of additional product which, upon recrystallization from 11 mL MeOH, provided another 2.7 g with a mp of 77-78 deg C. Further workup of the mother liquors yielded only impure starting nitrostyrene. A solution of LAH (96 mL of 1 M solution in THF) was cooled, under He, to 0 deg C with an external ice bath. With good stirring there was added 2.4 mL 100% H2SO4 dropwise, to minimize charring. This was followed by the addition of 10.8 g 1-(2,5-dimethoxy-4-methylphenyl)-1-methoxy-2-nitroethane. There was immediate discoloration. After the addition was complete, the reaction mixture was held at reflux on the steam bath for 2 h. After cooling again, the excess hydride was destroyed with 4 mL IPA and the reaction mixture made basic with 15% NaOH. The insoluble inorganic salts were removed by filtration, and the filter cake was washed first with THF, and then with IPA. The bright yellow filtrate and washes were pooled and stripped of solvent under vacuum, yielding 14 g of a yellow oil. This was suspended in 1 L dilute H2SO4 to give an ugly, cloudy, yellow-orange mess. Extraction with 3x75 mL CH2Cl2 removed much of the color, and the remaining aqueous phase was made basic with 25% NaOH, and extracted with 3x75 mL CH2Cl2. Evaporation of the solvent under vacuum gave 9 g of a pale amber oil which was distilled at 115-130 deg C at 0.4 mm/Hg. The water-white distillate was dissolved in 15 mL IPA, neutralized with concentrated HCl, and then diluted with 70 mL anhydrous Et2O. After a few min, white crystals formed, and these were removed by filtration and Et2O washed. When air-dried to constant weight, 4.49 g brilliant white crystals of 4-methyl-2,5,beta-trimethoxyphenethylamine hydrochloride (BOD) with a mp of 171-172 deg C with decomposition, were obtained. The mother liquors on standing deposited 0.66 g additional crystals which were impure and were discarded. Anal. (C12H20ClNO3) C,H. DOSAGE: 15 - 25 mg. DURATION: 8 - 16 h. QUALITATIVE COMMENTS: (with 20 mg) There were some very pleasant visuals starting at 2-2.5 hours and continuing to 4-5 hours after the beginning of the experiment. Open eye visuals seem to come on after staring at particular areas, such as the living room ceiling or at trees. The surroundings tended to move slightly. There was no flowing of the images at all. When looking at the pine trees, the needles appeared crystal clear and sharply defined, with strong contrasts. Though the mental effect is difficult to define, I am not sure it was all that great. I did become tired of the effect (along with the confusion) after 8 hours, and was quite happy to note that it did taper off in the early evening. I am not particularly sure I would want to try this material again. (with 20 mg) For the first three or so hours, the beauty of the experience was marred by a strange discomfort. There was some queasiness, and I felt a sluggishness of mind. Then I began moving in and out of a pleasant place, and finally the discomfort completely dissolved and the experience turned full on. Height of beauty, visual perception. Lights below are amazing. Outside, marvelous sense of Presence. There is not an elation, as often with other materials, but a strong, even powerful sense of goodness, inner strength, solidity. (with 25 mg) This was quite quick. The onset of the experience was apparent within a half hour, and we were both at +++ within the hour. Body load minimal. There was very little visual, compared with some materials. Very interesting eyes-closed, but not continually Q just now and then an intense vision might flash. Very benign and friendly and pleasant and good-humored feeling. Superb for conversation and conceptualization. (with 25 mg) The body load was quite noticeable for everyone. But the general state of mind was excellent; everyone was extremely relaxed and funny. Puns, insults, delightful amusement. Not very much insight work possible. Juices were needed and tolerated well, but no one was particularly hungry. Sleep was difficult for most people, not deep and not too refreshing. Excellent material, but body price a bit too much for the mental effects. Pleasant, and I wouldn't hesitate to take it again, but nothing very memorable except the tremendous humor and laughter, which was truly delightful. EXTENSIONS AND COMMENTARY: This compound, BOD, was the first exploratory member of a new family of phenethylamines. This family is called the BOX series because an oxygen atom has been put on the benzylic carbon (the "benzyl-oxy" or "BO") of each of several well studied drugs with recognized substituent patterns on the aromatic ring. The "X" would be "D," as used here with BOD, making reference to 2C-D, it would be a "B" in BOB making reference to 2C-B, etc. Actually the original thought was to make the "O" into an "OM" for methoxy, as this would allow more versatility in the naming of things such as ethoxys ("OE") or hydroxys ("OH"), but the methoxylated 2C-B analogue would have come out as BOMB, so the idea was dropped. Actually, the concept of naming of drugs with some acronym that is pronounceable has led into some interesting byways. Some examples have been unintended. I have heard DOM pronounced "dome" and DOET pronounced as "do it." And elsewhere I have mentioned the embarrassing occasions where the TOM and TOET families were pronounced "the toms and twats." Some examples have had names that have been contractions of popular names, such as XTC for ecstasy. And there are instances where a name might be proposed simply to irritate the newspaper people. An early street suggestion for PCP was FUK, and a current name for free-base methamphetamine is SNOT. And marijuana is fondly called SHIT by its aficionados. The final "A" on government groups such as the CIA or the DEA or the FDA is strongly reminscent of the final "A" which stands for amphetamine in things such as TMA and MDMA. Might there someday be a drug such as 4-cyclopropylmethyl-N-isopropylamphetamine (CIA), or 3,5-dimethoxy-4-ethylamphetamine (DEA)? It has just occurred to me that there is already a 4-fluoro-2,5-dimethoxyamphetamine (FDA), but I have already named it DOF. If all drugs were known only by publicly embarrassing names, there might be less publicity given them by the press. Back to the commentary on BOD. The rationale for this inclusion of a beta-oxygen atom into the structure of a phenethylamine is based directly on the chemistry that occurs naturally in the brain. The phenethylamine neurotransmitter, dopamine, is converted both in the brain and in the body to the equally important transmitter norepinephrine by just this sort of transformation. There is the enzymatic addition of an oxygen atom to the "benzylic" position of dopamine. And identical chemistry goes on with tyramine in a number of plants and animals, with a similar addition of oxygen to form octopamine, so-named for its discovered presence in the salivary glands of Octopus vulgaris. In the first explorations in the "OX" series, this oxygen was intentionally blocked with a methyl group, to ease its entry into the brain, and increase the possibilities of its being active as a psychedelic. As mentioned above, the "D" in "OD" follows from its ring orientation pattern being the same as that of 2C-D (and this, originally from the mimicking of the pattern of DOM). All of these D- compounds have the 2,5-dimethoxy-4-methyl ring-substitution pattern. An interesting complication is also part of this structure package. The added methoxy group (or hydroxy group, see recipe for BOHD) also adds a new asymmetric center, allowing for the eventual separation of the material into two optical isomers. And at such time as the corresponding amphetamine homologues might be made and studied, the presence of yet another chiral center (under the alpha-methyl group) will demand that there be actually two racemic compounds synthesized, and a total of four isomers to contend with, if really careful and thorough work is to be done. A parallel chemistry to all of this follows the addition of sodium ethoxide (rather than sodium methoxide) to the nitrostyrene. The final product, then, is the ethoxy homologue 2,5-dimethoxy-beta-ethoxy-4-methylphenethylamine, or BOED. It is down in human potency by a factor of three, with a normal dosage being 70-75 milligrams. It has a ten hour duration, and is both anorexic and diuretic. There have been no visual effects or insights reported, but rather simply a highly intoxicated state. Two synonyms, two definitions, and an expression of admiration. The word norepinephrine is synonymous with noradrenalin, and the word epinephrine is synonymous with adrenalin. The distinctions are that the first in each case is American and the second British. And the term "chiral" indicates a potential asymmetry in a molecule that would allow eventual separation into two optical isomers. The term "racemic" refers to a mixture of these two isomers which has not yet been separated into the individual components. A racemic mixture is called a racemate and, from the point of view of the human animal (which is completely asymmetric), must be considered as a mixture of two structurally identical but optically mirror-image isomers, which can be potentially separated and which will certainly have different pharmacologies. And the admiration? This is directed to the explorer who ventured close enough to an octopus to locate its salivary glands and to discover a phenethylamine there! |
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