Mechanistic and Sterochemical Insights on the Pt-Catalyzed Rearrangement of Oxiranylpropargylic Esters to Cyclopentenones
作者:Adán B. González-Pérez、Belén Vaz、Olalla Nieto Faza、Ángel R. de Lera
DOI:10.1021/jo301651r
日期:2012.10.5
p)). Although the basic steps are coincidental with those proposed by Sarpong et al., who characterized a 2H-pyran as intermediate, calculations have revealed other intricate details of this complex rearrangement. The 2H-pyran is proposed to result from the ring-opening of a bicyclic oxonium ion that follows the nucleophilic capture by the epoxide of a platinum carbene generated by an initial Pt-mediated