4-fluoro-3-bromo benzaldehyde acetals

Details 4-fluoro-3-bromo benzaldehyde acetals 4-fluoro-3-bromo benzaldehyde acetals

1988-03-02

1989-07-04

Chan, Nicky

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549369, 549347, 568592, C07D31716, C07D31906, C07D32106, C07C 43307

Patent

active

048452491

ABSTRACT:
The new compound ##STR1## is prepared and converted to the new acetal ##STR2## which is reacted with an alkali phenolate or alkaline earth metal phenolate in the presence of copper or a copper compound as a catalyst and in the presence of a diluent at a temperature between about 100.degree. and 200.degree. C. to produce the new acetal ##STR3## which can be hydrolyzed to the corresponding aldehyde which is a known intermediate for pyrethroid-like insecticides.

REFERENCES:
patent: 3904654 (1975-09-01), Birum
patent: 3965127 (1976-06-01), Birum

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