Zwitterionic Stabilization of a Reactive Cobalt Tris-Isocyanide Monoanion by Cation Coordination
作者:Alex E. Carpenter、Grant W. Margulieux、Matthew D. Millard、Curtis E. Moore、Nils Weidemann、Arnold L. Rheingold、Joshua S. Figueroa
DOI:10.1002/anie.201205058
日期:2012.9.10
A break with tradition: The cation, [Ph3PNPPh3]+ ([PPN]+), was found to provide a stabilizing η2‐arene interaction to the coordinatively unsaturated, tris‐isocyanide monoanion, [Co(CNArMes2)3]−(ArMes2=2,6‐(2,4,6‐Me3C6H2)C6H3); Co=purple, N=light purple, and P=orange). The resulting zwitterion is a source of [Co(CNArMes2)3]− anions, performing nucleophilic additions, carbon–element bond activations
与传统的一个突破:阳离子,[PH 3 PNPPh 3 ] +([PPN] +),被发现是提供一种稳定η 2 -arene相互作用的配位不饱和,三异氰化物单价阴离子,[CO( CNAr Mes2)3 ] -(Ar Mes2 = 2,6-(2,4,6-Me 3 C 6 H 2)C 6 H 3);Co =紫色,N =浅紫色,P =橙色)。产生的两性离子是[Co(CNAr Mes2)3 ]的来源- 阴离子,进行亲核加成,碳元素键活化和多步脱羰反应。