Process of the prparation of perfluoroalkyl compounds, and penta

Details Process of the prparation of perfluoroalkyl compounds, and penta Process of the prparation of perfluoroalkyl compounds, and penta

1989-02-21

1990-11-06

Shaver, Paul F.

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

Organic compounds

Oxygen containing

568821, 568822, 568828, 568832, 568838, 568839, 568842, 568843, 556470, 556482, 556485, C07C 3346, C07C 3520, C07C 3508, C07C 3506

Patent

active

049688480

ABSTRACT:
A process for the preparation of perfluoroalkyl compounds which comprises reacting a perfluoroalkyl-trimethylsilane of the general formula (CH.sub.3).sub.3 Si-C.sub.n F.sub.2n+1 (I), wherein the group C.sub.n F.sub.2n+1 represents a perfluoroalkyl group having from 1 to 6 carbon atoms, with a carbonyl compound of the general formula F.sup.1 --CO--R.sup.2 (II), wherein R.sup.1 represents a hydrocarbon group or hydrogen and R.sup.2 represents a hydrocarbon group, a perfluoroalkyl group or a perfluoroaryl group, but wherein R.sup.1 and R.sup.2 together may also be part of an alicyclic ring system, in the presence of a salt-like fluoride--which is at least partially soluble in the reaction medium--as a catalyst to yield a silylether of the formula ##STR1## and isolating this compound or hydrolyzing it to yield an alcohol of the formula IV ##STR2## The invention also relates to pentafluoroethyl trimethylsilane (CH.sub.3).sub.3 Si--CF.sub.2 CF.sub.3 and a process for the preparation of this compound.

REFERENCES:
patent: 3536745 (1970-10-01), Dear
patent: 4383120 (1983-05-01), Yates
patent: 4430504 (1984-02-01), Reuter et al.
patent: 4613681 (1986-09-01), Foulletier et al.
patent: 4780554 (1988-10-01), Quirk et al.
patent: 4785126 (1988-11-01), Bruno
Tetrahedron Letters 25, 2195-8 (1984).

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