Phosphorated 1,2-Oxazabuta-1,3-dienes as Synthetic Tools for the Preparation of <i>α</i>-Amino Phosphorus Derivatives and Functionalized Nitrogen-Containing Heterocycles
作者:Jesús M. de los Santos、Roberto Ignacio、Domitila Aparicio、Francisco Palacios
DOI:10.1080/10426507.2010.522632
日期:2011.3.31
Abstract An efficient method for the synthesis of phosphorated 1,2-oxazabuta-1,3-dienes derived from phosphine oxides and phosphonates has been developed by means of base-mediated dehydrohalogenation of readily available α-halooximes. New functionalized α-amino phosphorus derivatives are easily available, in a regioselective way, through conjugate addition of amino nucleophilic reagents such as ammonia
摘要 通过碱介导的 α-卤代肟脱卤化氢,开发了一种有效的合成磷酸化 1,2-oxazabuta-1,3-二烯的方法,该方法源自氧化膦和膦酸酯。通过将氨基亲核试剂(如氨、伯胺或仲胺和旋光氨基酯)与这些高反应性亚硝基衍生物迈克尔受体共轭加成,可以以区域选择性方式轻松获得新的功能化 α-氨基磷衍生物。磷酸化的 1,2-oxazabuta-1,3-二烯也与烯胺以正式的 [3 + 2] 环加成反应生成高度官能化的磷酸化 N-羟基吡咯衍生物。