作者:Rubén Sánchez-Obregón、Benjamin Ortiz、Fernando Walls、Francisco Yuste、José L Garcı́a Ruano
DOI:10.1016/s0957-4166(99)00079-8
日期:1999.3
Chiral α-acetylenic oxiranes were easily synthesized from readily available propargylic esters by a four-step sequence involving the stereoselective reduction of α′-alkynyl β-keto sulfoxides with DIBAH (de 66–78%) and DIBAH/ZnBr2 (de 78–88%), followed by further reduction of the resulting hydroxy sulfoxides into the corresponding sulfenyl derivatives and final epoxy ring closure via sulfonium salt