Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1983-02-07
1986-07-01
Raymond, Richard L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
548427, 548428, 548447, 548508, 546 94, 502230, C07D20902
Patent
active
045981566
ABSTRACT:
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.
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Ciba Geigy Corporation
Jorda Karl F.
Raymond Richard L.
Springer D. B.
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