[3-(4-Bromo-phenoxy)-phenyl]-hydroxy-acetonitrile 、 2,2-Dimethyl-3-(1-bromo-2,2-dichloro-2-bromoethyl)-cyclopropanecarboxylic acid chloride 生成 m-(p-bromophenoxy)-α-cyanobenzyl dl-trans-2,2-dimethyl-3-(1,2-dibromo-2,2-dichloroethyl)cyclopropanecarboxylate