[(E)-4-methoxy-4-oxobut-2-enyl] (2E,4E)-3-[tert-butyl(dimethyl)silyl]oxy-5-(4-methoxyphenyl)sulfanyl-2-methylpenta-2,4-dienoate 以
甲苯 为溶剂,
反应 144.0h,
以23%的产率得到(3aS,4R,5R,7aS)-7-(tert-Butyl-dimethyl-silanyloxy)-5-(4-methoxy-phenylsulfanyl)-7a-methyl-1-oxo-1,3,3a,4,5,7a-hexahydro-isobenzofuran-4-carboxylic acid methyl ester