4-oxo-4,5,6,7-Tetrahydroindole derivatives

Details 4-oxo-4,5,6,7-Tetrahydroindole derivatives 4-oxo-4,5,6,7-Tetrahydroindole derivatives

1987-12-22

1989-04-25

Ceperley, Mary E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20942

Patent

active

048249653

ABSTRACT:
The present invention provides a process for the preparation of 4-hydroxyindole derivatives of the general formula: ##STR1## in which R.sub.1 is a hydrogen atom or an alkyl radical containing up to 6 carbon atoms and R.sub.2 is a hydrogen atom or an alkyl radical containing up to 6 carbon atoms, wherein a compound of the general formula: ##STR2## in which R.sub.2 has the same meaning as above, is reacted with a compound of the general formula:

REFERENCES:
patent: 3510491 (1970-05-01), Bell
patent: 3654303 (1972-04-01), Remers et al.
R. Marchelli et al., Can. J. Chem. 1969, 47(23), 4375-4381, Preparation and Properties of the Hydroxyindole-3-Carboxylic Acids.
R. Marchelli et al., Chem. Abstracts, vol. 72, No. 12470c (1969), Preparation and Properties of the Hydroxyindole-3-Carboxylic Acids.
S. Hauptmann et al., Chem. Abstracts, vol. 64, No. 17521h (1966), Hydroxyindoles 4-oxo-4,5,6,7-Tetrahydroindoles from Cyclohexanedione and Isonitroso Carbonyl Compounds.

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