Preparation of vinylene fluorides

Details Preparation of vinylene fluorides Preparation of vinylene fluorides

1978-07-05

1980-07-15

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603974, 2603975, C07J 900

Patent

active

042128153

ABSTRACT:
A ketone is reacted with an N,N-disubstituted-aminosulfur trifluoride in the presence of a polar solvent, preferably also in the presence of a polar catalyst, to produce a vinylene fluoride. Exemplary is the reaction of cholestan-3.beta.-ol-6-one-3-t-butyl ether with diethylaminosulfur trifluoride in the presence of fuming sulfuric acid and tetrahydrofuran to produce 6-fluorocholesterol.

REFERENCES:
patent: 3976691 (1976-08-01), Middleton

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