cis 1,3-Dibenzyl-4-(2'-diphenylphosphinoyl-1'-hydroxyethyl)-5-t-butyldimethylsilyloxymethylimidazolidin-2-one 在
sodium hydride 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 cis 1,3-Dibenzyl-4-diphenylphosphinoylmethyl-2,3,3a,4,6,6a-hexahydrofuro<3,4-d>imidazol-2-one 、
cis 1,3-Dibenzyl-4-diphenylphosphinoylmethyl-2,3,3a,4,6,6a-hexahydrofuro<3,4-d>imidazol-2-one