1,2,3,4,5-五甲基环戊二烯 、
4-(4-methoxyphenyl)penta-2,3-dienyl acetate 在
N(pPhMe)
+(radical) 作用下,
生成 Acetic acid 2-[(1R,3R,4S,7R)-3-(4-methoxy-phenyl)-1,3,4,5,6,7-hexamethyl-bicyclo[2.2.1]hept-5-en-(2Z)-ylidene]-ethyl ester 、 Acetic acid 2-[(1R,3S,4S,7R)-3-(4-methoxy-phenyl)-1,3,4,5,6,7-hexamethyl-bicyclo[2.2.1]hept-5-en-(2Z)-ylidene]-ethyl ester