4-(4-methyl-7-oxo-2,3,4,7-tetrahydro-1H-inden-4-yloxy)but-2-ynyl4-methylbenzoate 在
silver hexafluoroantimonate 、 3,3'-bis[3,5-bis(trifluoromethyl)phenyl]-1,1'-binaphthyl-2,2'-diyl hydrogenphosphate 、
水 作用下,
以
1,2-二氯乙烷 为溶剂,
以87%的产率得到5-hydroxy-8b-methyl-10-oxo-3,3a,4,5,6,7,8,8b-octahydro-2H-3,5-ethanoindeno[4,5-b]furan-3-yl 4-methylbenzoate