methyl hydrogen 2-(benzyloxy)-2-((4R,5S)-2,2-dimethyl-5-vinyl-1,3-dioxolan-4-yl)ethylphosphonate 在
bromo(bis-collidine)hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以69%的产率得到(3as,9as)-9-(benzyloxy)-4-bromo-2,2-dimethyl-7-methoxy-hexahydro-3aH-[1,3]dioxolo[4,5-e][1,2]oxaphosphocine 7-oxide