Synthesis of new β- and γ-aminopyrrolidinephosphonates via 1,3-dipolar cycloaddition of substituted vinylphosphonates
作者:Nicolas Rabasso、Antoine Fadel
DOI:10.1016/j.tetlet.2009.10.087
日期:2010.1
β-(aminomethyl)vinylphosphonates was achieved from vinyl bromide via a cross-coupling reaction with triethyl phosphite and by cross-metathesis of allyl bromide and vinylphosphonate, respectively. The 1,3-dipolar cycloaddition of these vinylphosphonates with a dipole in the presence of trifluoroacetic acid afforded selectively the β-aminopyrrolidinephosphonates. Syntheses of cis- and trans-γ-aminopyrrolidinephosphonates
α-和β-(氨基甲基)乙烯基膦酸酯的合成是通过与亚磷酸三乙酯的交叉偶联反应以及分别通过烯丙基溴和乙烯基膦酸酯的交叉复分解反应,由溴化乙烯基酯实现的。在三氟乙酸存在下,这些乙烯基膦酸酯与偶极的1,3-偶极环加成反应选择性地提供了β-氨基吡咯烷膦酸酯。还描述了顺式和反式-γ-氨基吡咯烷膦酸酯的合成。