A Sonogashira Cross-Coupling/5-<i>exo</i>-dig Cyclization/Ionic Hydrogenation Sequence: Synthesis of 4-Substituted 3-Azabicyclo[3.1.0]hexan-2-ones from 2-Iodocyclopropanecarboxamides
作者:Benoît de Carné-Carnavalet、Christophe Meyer、Janine Cossy、Benoît Folléas、Jean-Louis Brayer、Jean-Pierre Demoute
DOI:10.1021/jo400713u
日期:2013.6.7
A variety of 4-substituted 3-azabicyclo[3.1.0]hexan-2-ones have been prepared from 2-iodocyclopropanecarboxamides by a three-step sequence involving a copper-free Sonogashira coupling with terminal aryl- or heteroarylalkynes, followed by a 5-exo-dig cyclization and an ionic hydrogenation.
由2-碘环丙烷甲酰胺通过三步法制备了各种4-取代的3-氮杂双环[3.1.0]己-2-酮,包括无铜Sonogashira与末端芳基或杂芳基炔烃的偶联,随后是5步-外-Dig环化和离子加氢。