Selected Reactions of Diethyl (<i>E</i>)-1-(bromomethyl)-2-cyanovinylphosphonate with Secondary and Tertiary Amines
作者:Asma Fray、Jihène Ben Kraïem、Hassen Amri
DOI:10.1002/hc.21112
日期:2013.11
An easy regio- and stereoselective synthesis of new nitrogenous molecules 2a–e was successfully realized via an effective coupling reaction of diethyl (E)-1-(bromomethyl)-2-cyanovinylphosphonate 1 with various secondary amines in methanol. Hence, the use of less and more bulky secondary amines gives rise, respectively, to the successive (SN2′) substitution–isomerization and (SN2) substitution derivatives
A practical synthesis of diethyl 1-[(alkylamino)(cyano)methyl]vinylphosphonates
作者:Asma Fray、Jihène Ben Kraïem、Abdelaziz Souizi、Hassen Amri
DOI:10.3998/ark.5550190.0013.811
日期:——
A simple, convenient and highly stereoselectivesynthesis of diethyl (E)-1-(bromomethyl)-2cyanovinylphosphonate 4 is described. The product would be a useful substrate for the synthesis of diethyl 1-[(alkylamino)(cyano)methyl]vinylphosphonates 5 via allylic rearrangement SN2 -type mechanism.