Process for producing an indoline

Details Process for producing an indoline Process for producing an indoline

1985-05-07

1987-06-16

Daus, Donald G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548491, C07D20908, C07D20912, C07D20914

Patent

active

046737499

ABSTRACT:
A process for producing an indoline of the formula: ##STR1## wherein R.sub.1 is a hydrogen atom, a lower alkyl group, a lower alkoxy group, a nitro group or a hydroxyl group, R.sub.2 is a hydrogen atom, a lower alkoxy group or a nitro group, and R.sub.3 is a hydrogen atom, a lower alkyl group or a substituted lower alkyl group, by a cyclization reaction of a 2-halogenophenethylamine of the formula: ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 are as defined above, and X is a halogen atom, in the presence of a copper type catalyst and a dehydrohalogenating agent, characterized in that copper bis(8-hydroxyquinolinolate) is used as the copper type catalyst, and an alkali is used as the dehydrohalogenating agent.

REFERENCES:
patent: 4087442 (1978-05-01), Nakayama et al.
patent: 4159271 (1979-06-01), Sano et al.
patent: 4280958 (1981-07-01), Nakayama et al.
Ohara, Chemical Abstracts 97:127280z (1982).
Patent Abstracts of Japan, vol. 6, No. 3, Jan. 9, 1982, p. (C-86) (881), JP-A-56-128756, (Sendai Fukusoka Kagaku Kenkyusho) 08-10-1981.

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