Fluorinated carboxylic acid derivatives and methods for making

Details Fluorinated carboxylic acid derivatives and methods for making Fluorinated carboxylic acid derivatives and methods for making

1990-08-03

1993-03-16

Shaver, Paul F.

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

Organic compounds

Silicon containing

562586, 562840, 562849, C07F 708, C07F 718

Patent

active

051946483

ABSTRACT:
Novel fluorinated carboxylic acid derivatives of the general formula: ##STR1## wherein Rf is a divalent perfluoroalkyl or perfluoropolyether group and Z is halogen, hydroxyl or triorganosiloxy are useful intermediate for the synthesis of various fluorinated compounds. Compounds [I-i] wherein Z in formula [I] is F are prepared by reacting acid fluoride-terminated compounds of the formula: ##STR2## with an alkali fluoride and further with an allyl halide. Compounds [I-ii] wherein Z in formula [I] is a halogen are preparred by reacting compounds [I-i] with lithium halide. Compounds [I-iii] wherein Z in formula [I] is OH are prepared through hydrolysis of compounds [I-ii]. Compounds [I-iv] wherein Z in formula [I] is triorganosiloxy are prepared by reacting compounds [I-iii] with a triorganosilylating agent.

REFERENCES:
patent: 4892962 (1990-01-01), Lang
patent: 4927950 (1990-05-01), Hisamoto et al.
patent: 5013854 (1991-05-01), Bunnell

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