2-chloro-5-methoxybenzoquinone 、
(+/-)-methyl 5-tert-butyldimethylsilyloxy-2-dimethoxymethylene-3-methylenehexanoate 以
甲苯 为溶剂,
反应 22.0h,
以59%的产率得到3-[2-(tert-Butyl-dimethyl-silanyloxy)-propyl]-8a-chloro-5-hydroxy-1,6-dimethoxy-8-oxo-8,8a-dihydro-naphthalene-2-carboxylic acid methyl ester