Process for the preparation of 2,2-difluoropent-4-enoic acids an

Details Process for the preparation of 2,2-difluoropent-4-enoic acids an Process for the preparation of 2,2-difluoropent-4-enoic acids an

1987-12-07

1990-01-09

Doll, John

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

Organic compounds

Silicon containing

556427, 556442, C07F 710

Patent

active

048929620

ABSTRACT:
The reaction of allyl bromo- or chloro-difluoroacetates with monochlorisilanes in the presence of zinc with heating gives silyl esters of .alpha.,.alpha.-difluoro-.gamma.,.delta.-pentenoic acids. The free acids, from which acid derivatives can be prepared by conventional methods, are obtained by hydrolysis. The pentenoic acids and pentenoic acid derivatives are suitable for the preparation of polymers and copolymers, from which metal-organic polymers and copolymers having catalytic properties are obtainable.

REFERENCES:
M. Kolb et al., Tetrahedron Letters, 27, 4437 (1986).
Chem. Abstract Index Guide A 133.

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