Allenylidene Iron(II) Complexes and Their Deprotonation, Nucleophilic Addition Reactions, and Cathodic Protonation toward Alkynyl Derivatives: A Chemical and Electrochemical Study
作者:Ana I. F. Venâncio、M. Fátima C. Guedes da Silva、Luísa M. D. R. S. Martins、João J. R. Fraústo da Silva、Armando J. L. Pombeiro
DOI:10.1021/om050408a
日期:2005.9.1
(R‘ ‘ = CN (5a), MeO (5b)), respectively. Complex 2 (Y = BPh4) also leads to the cationic alkynyl compounds trans-[Fe(NCMe)−C⋮CCPh2(X)}(depe)2][BPh4] (X = NMe2 (6a), NHMe (6b)) and trans-[Fe(NCMe)−C⋮CCPh2(PMe3)}(depe)2]Y2 (Y2 = [BPh4]2 (7a), [BPh4]2-xBrx (7b)), in acetonitrile solution, upon reaction with NHMe2, NH2Me, and PMe3, respectively. The complexes have been characterized by multinuclear NMR
亚烯基配合物反式-[FeBr(C C CRR')(depe)2 ] [Y](R = Me,R'= Ph,1 ; R = R'= Ph,2 ; R = R'= Et,3;; depe = Et 2 PCH 2 CH 2 PEt 2; Y = BF 4,BPh 4)是通过反式-[FeBr 2(depe)2 ]与适当的炔醇HC⋮CCRR'(OH)在MeOH和在Na [BF 4 ]或Na [BPh 4 ]的存在下。去质子化3或亲核γ-除了2导致中性烯基和炔基络合物反式-[FeBr -C⋮CC(CHMe)Et}(depe)2 ](4)和反式-[FeBr(-C⋮CCPh 2 R'')(depe)2 ] (R′′= CN(5a),MeO(5b))。络合物2(Y = BPh 4)还导致阳离子炔基化合物反式-[Fe(NCMe)-C⋮CCPh 2(X)}(depe)2 ] [BPh 4 ](X = NMe