在常温常压下保持稳定
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-氨基-1-(3,4-二甲氧基苯基)乙醇 | 2-amino-1-(3,4-dimethoxy-phenyl)-ethanol | 6924-15-8 | C10H15NO3 | 197.234 |
—— | 3,4-dimethoxy-DL-mandelic acid-methylamide | 99986-87-5 | C11H15NO4 | 225.244 |
—— | Ethyl (2-(3,4-dimethoxyphenyl)-2-hydroxyethyl)carbamate | 54837-87-5 | C13H19NO5 | 269.298 |
—— | 2-bromo-1-(3,4-dimethoxy-phenyl)-ethanol | —— | C10H13BrO3 | 261.115 |
藜芦醛氰醇 | 2-(3,4-dimethoxyphenyl)-2-hydroxyacetonitrile | 6309-18-8 | C10H11NO3 | 193.202 |
溴代-3,4-二甲氧基苯乙酮 | 2-Bromo-1-(3,4-dimethoxyphenyl)ethanone | 1835-02-5 | C10H11BrO3 | 259.1 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (+/-)-2-(acetyl-methyl-amino)-1-(3,4-dimethoxy-phenyl)-ethanol | 107412-18-0 | C13H19NO4 | 253.298 |
Aminoketones are made by condensing phenolic ethers of the formula <;FORM:0684781/IV (b)/1>; with aminonitriles NC.CH2.NR3R4 in the presence of aluminium chloride and hydrogen chloride gas in an inert polar solvent and treating the product (amino-imine) with water; if desired, the groups R, R1 and R2 may then be replaced by hydrogen and/or the ketone reduced to the corresponding secondary alcohol; if the aminonitrile is used in the form of its hydrochloride or other inorganic salt the hydrogen chloride gas may be omitted; R, R1 and R2 are alkyl or aralkyl; R3 and R4 are hydrogen, alkyl or aralkyl or form a ring with the nitrogen atom. Suitable inert polar solvents are nitrobenzene, o-nitrotoluene and o-nitroanisole. The conversion of the ether groups into free phenolic groups may occur during formation or reduction of the ketone, particularly if catalytic hydrogenation is used for the latter step. In the examples, the following products are made: (1) adrenalone monobenzyl ether from catechol dibenzyl ether and methylamino-acetonitrile; (2) 3 : 4-dimethoxy-o -methylamino-acetophenone from veratrole and methylamino-acetonitrile; (3) 3 : 4-dimethoxy-o -isopropyl-aminoacetophenone, 3 : 4-dimethoxy - o - aminoacetophenone, 3 : 4 - dimethoxy - o - diethylamino - acetophenone and 3 : 4-dimethoxy-o -benzylmethylamino-acetophenone similarly; (4) 2 : 4- and 2 : 5-dimethoxy-o -methylamino-acetophenone from the dimethyl ethers of resorcinol and hydroquinone respectively; (5) 2 : 3 : 4-, 2 : 4 : 5- and 2 : 4 : 6-trimethoxy - o - methylamino - acetophenone from the trimethoxybenzenes; (6) 3 : 4-dihydroxy-o -methylamino - acetophenone and 3 : 4 - dihydroxy - o - isopropylamino - acetophenone by hydrolysis of their dimethyl ethers; (7) 1-(3 : 4-dimethoxyphenyl)-2-methylamino-ethanol and 1 - (3 : 4 - dimethoxyphenyl) - 2 - isopropylaminoethanol by catalytic hydrogenation of the corresponding ketones. The products are usually obtained as hydrochlorides. Specification 640,492 is referred to.;FORM:0684781/IV>