| 摘要 |
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.
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