(S)-methyl 2-[(S)-(acrylamido){(3aR,5R,6S,6aR)-tetrahydro-6-methoxy-2,2-dimethylfuro[2,3-d][1,3]dioxol-5-yl}methyl]pent-4-enoate 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
反应 20.0h,
以74%的产率得到methyl (2R,3S)-2-{(3aR,6S,6aR)-6-methoxy-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-5-yl}-7-oxo-2,3,4,7-tetrahydro-1H-azepine-3-carboxylate