Reactions between β-Propiolactone and Dialkyl Dimethylphosphoramidite-Ambident Character of β-Propiolactone and of Dialkyl Dimethylphosphoramidite
作者:Jugo Koketsu、Seiji Kojima、Yoshio Ishii
DOI:10.1246/bcsj.43.3232
日期:1970.10
The reactions between dialkyl dimethylphosphoramidite, Me2NP(OR)2, and β-propiolactone were carried out in various solvents at 80°C. Two kinds of reaction products were separated on a silica gel by elution with benzene-ethanol (4:1 v/v). The first species eluted was N,N-dimethyl-O-alkyl 2-alkoxycarbonylethylphosphoramidate, (RO)P(O)(NMe2)CH2CH2CO2R. The fraction having lower Rf value contained dialkyl
二烷基二甲基亚磷酰胺、Me2NP(OR)2 和 β-丙内酯之间的反应在 80°C 下在各种溶剂中进行。通过用苯-乙醇 (4:1 v/v) 洗脱在硅胶上分离两种反应产物。第一个洗脱的物质是 N,N-二甲基-O-烷基 2-烷氧基羰基乙基氨基磷酸酯,(RO)P(O)(NMe2)CH2CH2CO2R。具有较低Rf值的级分含有2-N,N-二甲基氨基甲酰基乙基膦酸二烷基酯,(RO)2P(O)CH2CH2CONMe2。从动力学研究中讨论了反应机理。