methyl hydrogen (benzyloxy)((4R,5S)-2,2-dimethyl-5-vinyl-1,3-dioxolan-4-yl)methylphosphonate 在
bromo(bis-collidine)hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以64%的产率得到(3as,8as)-4-(benzyloxy)-8-bromo-5-methoxy-2,2-dimethylhexahydro[1,3]dioxolo[4,5-d][1,2]oxaphosphepine 5-oxide