申请人:Ciba Geigy Corporation
公开号:US04598156A1
公开(公告)日:1986-07-01
Indoles of the formula I which are unsubstituted in the 2- and 3-positions: ##STR1## wherein Z is hydrogen or a group --COR, and X and Y have the meanings defined in claim 1, can be produced by a novel, simple and economical process which comprises reacting a compound of the formula II ##STR2## at a temperature of between 0.degree. and 120.degree. C., in the presence of a mercury or palladium catalyst, with benzoic acid vinyl ester, or with the vinyl ester of an aliphatic C.sub.1 -C.sub.4 -monocarboxylic acid; and optionally saponifying compounds of the formula I in which Z is --COR. The compounds of the formula I can be used for example for producing indigo dyes, or they can be used as pharmaceutical or agricultural active substances.
公式I中未在2-和3-位置上取代的吲哚化合物:##STR1##其中Z为氢或基团--COR,X和Y的含义如权利要求1所定义,可以通过一种新颖、简单和经济的方法制备,该方法包括在0°C至120°C之间的温度下,在存在汞或钯催化剂的情况下,将公式II的化合物##STR2##与苯甲酸乙烯酯反应,或与脂肪族C.sub.1-C.sub.4-一羧酸的乙烯酯反应;并且可选择地皂化Z为--COR的公式I的化合物。公式I的化合物可以用于例如生产靛蓝染料,或者它们可以用作药用或农业活性物质。