Enantioselective and regioselective nickel-catalyzed multicomponent coupling of chiral allenes, aromatic aldehydes, and silanes
作者:Sze-Sze Ng、Timothy F. Jamison
DOI:10.1016/j.tet.2005.08.063
日期:2005.11
developed, nickel-catalyzed multicomponent coupling of chiral allenes, aromatic aldehydes, and silanes is described. The axial chirality of the allene is transferred completely to the product, a trisubstituted Z-allylic alcohol protected as a silyl ether. A very high preference for sp rather than sp2 coupling is observed, and differentially substituted allenes undergo highly site-selective coupling. These
描述了最近开发的,手性烯,芳族醛和硅烷的镍催化的多组分偶联的发展的详细说明。丙二烯的轴向手性完全转移到产物中,该产物为被保护为甲硅烷基醚的三取代的Z-烯丙基醇。观察到非常优先选择sp而不是sp 2偶联,并且差异取代的异位烯经历高度位点选择性偶联。这些转变代表了丙二烯的第一个对映选择性多组分偶联过程。