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    • 2. 发明授权
    • Method for making o- and p- haloalkyl styrenes
    • 制备邻 - 和对 - 卤代烷基苯乙烯的方法
    • US4045501A
    • 1977-08-30
    • US601870
    • 1975-08-04
    • Thomas A. Bianchi
    • Thomas A. Bianchi
    • C07C17/14C07C17/25C07C22/04C07C25/14
    • C07C17/25C07C17/14C07C17/32C07C22/04
    • A method for making o- and p- halomethyl styrenes which comprises reacting an ethyl benzene, paraformaldehyde and hydrogen halide, treating the reaction product with a halogen, and dehydrohalogenating the resulting o- and p- halomethyl (1-haloethyl) benzenes at an elevated temperature using as dehydrohalogenating agent an amine acceptor of the generic formula: ##STR1## WHEREIN R is an alkyl group of 1 to 6 carbon atoms, n is an integer having a value of from 1 to 5, and at least one alkyl group is attached to a carbon atom adjacent to the nitrogen atom and when n is more than 1, the alkyl groups may be the same or different groups, and recovering a mixture of o- and p- halomethyl styrenes.
    • 一种制备邻 - 和对 - 卤代甲基苯乙烯的方法,包括使乙苯,多聚甲醛和卤化氢反应,用卤素处理反应产物,并将所得的邻 - 和对 - 卤代甲基(1-卤代乙基)苯在升高的 使用作为脱卤化氢剂的胺受体的通式为:其中R为1至6个碳原子的烷基,n为1至5的整数,并且至少有一个烷基被连接 与氮原子相邻的碳原子,并且当n大于1时,烷基可以相同或不同,并且回收邻卤代和对卤代甲基苯乙烯的混合物。