(1R,3R,4R,5S,6R)-4,5-bis-benzyloxy-3-hydroxy-3-vinyl-2,7-dioxa-bicyclo[4.4.0]dec-9-ene 在
Grubbs catalyst first generation 4 A molecular sieve 、 Montmorillonite K-10 clay 作用下,
以
二氯甲烷 为溶剂,
生成 (1R,3S,4R,5S,6R)-4,5-bis-benzyloxy-2,7-dioxa-bicyclo[4.4.0]dec-9-enylspiro-3,2'-[2',5'-dihydrofuran]