3-Oxobenzothiophenyl-idenyl, halo-acetic acids

Details 3-Oxobenzothiophenyl-idenyl, halo-acetic acids 3-Oxobenzothiophenyl-idenyl, halo-acetic acids

1978-02-09

1979-05-15

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603067R, 260307FA, 26032634, 544 54, 544 58, 544 96, 544146, 544333, 544376, 548300, 546202, C07D33364

Patent

active

041547390

ABSTRACT:
Novel halogeno-benzothiophenecarboxylic acids and a novel process for their preparation by reacting substituted or unsubstituted thiophenols with dihalogenomaleic anhydrides or derivatives thereof are described. The novel halogeno-benzothiophenecarboxylic acids are valuable intermediates for the preparation of pharmaceutical active compounds having an antiallergic action.

REFERENCES:
patent: 3816467 (1974-06-01), Wright
Mostoslavskii et al., Zh. Obshch. Khim. 32, 660, (1962).

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