丙烯酸苄酯 、
1-[(4S,5S)-2,2-dimethyl-3-[(2-methylpropan-2-yl)oxycarbonyl]-5-phenyl-1,3-oxazolidin-4-yl]-N-(2-oxo-2-phenylmethoxyethyl)methanimine oxide 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 lithium bromide 作用下,
以
四氢呋喃 为溶剂,
反应 0.17h,
以65%的产率得到(2R,4S,5R)-5-((4S,5S)-3-tert-Butoxycarbonyl-2,2-dimethyl-5-phenyl-oxazolidin-4-yl)-1-hydroxy-pyrrolidine-2,4-dicarboxylic acid dibenzyl ester