1,2-dihydro-1-hydroxy-4,6-dimethyl-2-oxopyridine-3-cerbonitrile 、
2,2-dimethyl-3-(2',2'-dibromovinyl)-cyclopropane-1-carboxylic acid chloride 在
吡啶 作用下,
以
甲苯 为溶剂,
以69.1%的产率得到(1RS)-cis-(2,2-dibromovinyl)-2,2-dimethyl-cyclopropane-1-carboxylate 1-(3-cyano-4,6-dimethyl-2-oxo)piridyl ester