Studies on tetrahydroisoquinolines. XXIX. Reaction of 7-acetoxy-1,2,3,4,6,7-hexahydro-1-(2-(3',4'-dimethoxy- or 3',4'-methylenedioxyphenyl)ethyl)-7-methoxy-2-methyl-6-oxo-isoquinoline (o-quinol acetate) with acetic anhydride in the presence of acid.
作者:OSAMU HOSHINO、KYOKO KIKUCHI、HIDETO OGOSE、BUNSUKE UMEZAWA、OICHI IITAKA
DOI:10.1248/cpb.35.3666
日期:——
Treatment of o-quinol acetates (5a, b) of 1, 2, 3, 4-tetrahydro-1-phenethylisoquinolin-6-ols (6a, b) with acetic anhydride in the presence of an acid (concentrated H2SO4, BF3 · Et2O or CF3COOH) gave 2-acetoxyhomoaporphines (4a, b) and/or aldehyde-amides (7a, b), and the ratio of the products was strongly dependent on the choice of the acid and the solvent. A mechanistic pathway is proposed.
对1, 2, 3, 4-四氢-1-苯乙基异喹啉-6-醇(6a, b)的o-喹酮乙酸酯(5a, b)进行醋酸酐处理,在酸(浓硫酸、BF3·Et2O或CF3COOH)的存在下,得到了2-乙氧基同阿波啡碱(4a, b)和/或醛-酰胺(7a, b),而产品的比例强烈依赖于所选酸和溶剂。提出了一条机理途径。