Preferential aliphatic halogenation of ar-substituted alkylbenze

Details Preferential aliphatic halogenation of ar-substituted alkylbenze Preferential aliphatic halogenation of ar-substituted alkylbenze

1977-11-17

1979-01-09

Vertiz, O. R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 2514

Patent

active

041338375

ABSTRACT:
In an isomeric mixture of ar-substituted-1-(sec-alkyl)benzenes, such as a mixture of 2-chlorocumene, 3-chlorocumene and 4-chlorocumene, the alkyl groups of the 3-isomer and 4-isomer react preferentially with a halogen in the presence of a catalyst such as benzoyl peroxide to form a 3-halo-1-(.alpha.-alkyl, .alpha.-halo)alkylbenzene and 4-halo-1-(.alpha.-alkyl, .alpha.-halo)alkylbenzene such as 3-chloro-.alpha.-bromocumene, and 4-chloro-.alpha.-bromocumene.

REFERENCES:
patent: 2193823 (1940-03-01), Levine et al.
patent: 2265312 (1941-12-01), Quattlebaum et al.
patent: 2432737 (1947-12-01), Erickson et al.
patent: 3190825 (1965-06-01), Huyser
patent: 3553274 (1971-01-01), Lewis et al.

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