methyl 2-((2R,4a'R,5R,8a'R)-2'-(bromomethyl)-5,5',5',8a'-tetramethyl-4,4a',5,5',6',7',8',8a'-octahydro-3H,4'H-spiro[furan-2,1'-naphthalen]-5-yl)acetate 在
N-溴代乙酰胺 作用下,
以
水 、
丙酮 为溶剂,
反应 8.0h,
以85%的产率得到methyl 2-((2R,3'S,4a'R,5R,8a'R)-3'-bromo-5,5',5',8a'-tetramethyl-2'-methylenedecahydro-2'H,3H-spiro[furan-2,1'-naphthalen]-5-yl)acetate