ethyl (E)-4-[(phenylsulfonyl)imino]-2-butenoate 、
(+)-isopinocamphenyl vinyl ether 以
甲苯 为溶剂,
反应 60.0h,
以44%的产率得到(2R,4S)-1-Benzenesulfonyl-2-((1R,2R,3R,5S)-2,6,6-trimethyl-bicyclo[3.1.1]hept-3-yloxy)-1,2,3,4-tetrahydro-pyridine-4-carboxylic acid ethyl ester