[2 + 1] Cycloaddition of Catalytic Ruthenium Vinyl Carbenes: A Stereoselective Controlled Access to (<i>Z</i>)- and (<i>E</i>)-Vinyl Epoxypyrrolidines
作者:Damián Padín、Fermín Cambeiro、Martín Fañanás-Mastral、Jesús A. Varela、Carlos Saá
DOI:10.1021/acscatal.6b02929
日期:2017.2.3
cyclization reaction with diazo compounds in the presence of catalytic amounts of Cp*RuCl(cod) to afford vinyl epoxypyrrolidines, valuable building blocks for the synthesis of biologically active molecules. Ruthenium vinyl carbene intermediates have been invoked to explain the overall [2 + 1] cycloaddition (epoxy-annulation reaction). The reaction proceeds under mild conditions and in short reaction times