(N-Substituted benzoyl)halobenzoic acid anhydrides

Details (N-Substituted benzoyl)halobenzoic acid anhydrides (N-Substituted benzoyl)halobenzoic acid anhydrides

1980-12-22

1983-04-26

Terapane, John F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

544 581, 544172, 544396, 546232, 546239, 548518, 548577, 548463, 548493, C07C 5156, C07D29506

Patent

active

043812660

ABSTRACT:
Anhydride compounds of the formula ##STR1## wherein A is an optionally substituted amino-phenyl or optionally substituted 3-indolyl radical, Hal represents halogen, Z represents hydrogen, alkyl of 1 to 4 carbon atoms or an optionally substituted phenyl radical and n is 1 to 4; these anhydrides are particularly useful as starting materials for the manufacture of halogenated 3-aryl-3-indolyl-phthalides or fluoran derivatives.

REFERENCES:
patent: 2515320 (1950-07-01), Sokol

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