Acrylic acid (1R,2S,3R,4S)-3-benzhydryloxy-1,7,7-trimethyl-bicyclo[2.2.1]hept-2-yl ester 、
环戊二烯 在
二异丙氧基二氯化钛 作用下,
生成 Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid (1R,2S,3R,4S)-3-benzhydryloxy-1,7,7-trimethyl-bicyclo[2.2.1]hept-2-yl ester 、 (1R,2R,4R)-Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid (1R,2S,3R,4S)-3-benzhydryloxy-1,7,7-trimethyl-bicyclo[2.2.1]hept-2-yl ester 、