(1S,2R,6S,7R)-4-ethenyl-7,10,10-trimethyl-3-oxa-5-azatricyclo[5.2.1.02,6]dec-4-ene 、
Phosphoric acid (E)-3-tert-butoxy-1-methylene-allyl ester diphenyl ester 在
三氟乙酸酐 、
calcium carbonate 作用下,
以
二氯甲烷 为溶剂,
反应 0.33h,
以63%的产率得到Phosphoric acid (3S,4R)-3-tert-butoxy-4-((1S,2R,6S,7R)-7,10,10-trimethyl-3-oxa-5-aza-tricyclo[5.2.1.02,6]dec-4-en-4-yl)-cyclohex-1-enyl ester diphenyl ester