| 摘要 |
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.
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