(S)-4-(2-allyloxy-pent-4-enyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid t-butyl ester 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) silica gel 、 ethyl acetate hexanes 作用下,
以
二氯甲烷 为溶剂,
反应 4.0h,
以to afford (S)-4-(3,6-dihydro-2H-pyran-2-ylmethyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid t-butyl ester (1.16 g, 92%) as a brown oil的产率得到(S)-4-(3,6-dihydro-2H-pyran-2-ylmethyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid t-butyl ester