Reactive distillation process for free radical halogenation

Details Reactive distillation process for free radical halogenation Reactive distillation process for free radical halogenation

1993-07-14

1995-09-12

Shaver, Paul F.

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

Organic compounds

Silicon containing

556476, 556477, 20415764, 20415763, 20415774, 20415787, 20415812, 568 56, 568388, 568393, 570185, 570252, 570255, C07F 708

Patent

active

054498015

ABSTRACT:
A process for the selective high yield halogenation R--CH.sub.3 wherein R is ##STR1## Si(Cl).sub.m (CH.sub.3).sub.n, wherein m is 1 to 3, n is 1 to 3 and m+n is 3; phenyl; or phenyl substituted with Cl, Br, F, OR.sup.1, SR.sup.1 or NO.sub.2 ; R.sup.1 is C.sub.1 -C.sub.3 alkyl; and X is chlorine or bromine; under reactive distillation conditions which continuously and selectively separate the mono, di, or trihalogenated product from the reaction zone and which does not require recycling of the starting materials is disclosed.

REFERENCES:
patent: 2510149 (1950-06-01), Speier, Jr.
patent: 2715134 (1955-08-01), Speier, Jr.
patent: 3840447 (1974-10-01), Lucking et al.
patent: 3844915 (1974-10-01), Takamizawa et al.
patent: 3912604 (1975-10-01), Lucking et al.
patent: 4101397 (1978-07-01), Kotzsch et al.
patent: 4659852 (1987-04-01), Shinohara et al.
patent: 4874488 (1989-10-01), Crabtree et al.

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