Oxidative addition reactions of nicotinamide based organoselenium compounds on [M(PPh3)4] (M=Pd or Pt): An insight study for the formation of several isolable products
作者:Rohit Singh Chauhan、C. Parashiva Prabhu、Prasad P. Phadnis、G. Kedarnath、James A. Golen、Arnold L. Rheingold、Vimal K. Jain
DOI:10.1016/j.jorganchem.2012.09.012
日期:2013.1
addition reactions of [2-NC5H3(3-COR)Se]2 (R = NH2, NHPh, or NHpym (pym = pyrimidine)) with [M(PPh3)4] (M = Pd, Pt) in benzene afforded complexes of the type, [Mη2-SeC5H3(3-COR)N}SeC5H3(3-COR)N}(PPh3)] (1) (M = Pt, Pd; R = NH2, NHPh, or NHpym). A similar reaction with [2-NC5H3(3-COOH)Se]2 gave an insoluble product which after extraction with dichloromethane gave [M(Cl)SeC5H3(3-COOH)N}(PPh3)2] (2). Compound
[2-NC 5 H 3(3-COR)Se] 2(R = NH 2,NHPh或NHpym(pym =嘧啶))与[M(PPh 3)4 ](M = Pd,Pt )中的类型的苯,得到配合物,[M η 2 -sec 5 ħ 3(3-COR)N} 秒5 ħ 3(3-COR)N}(PPH 3)](1)(M =铂,Pd; R = NH 2,NHPh或NHpym)。与[2-NC 5 H 3(3-COOH)Se] 2的相似反应产生不溶产物,其在用二氯甲烷萃取后得到[M(Cl)SeC 5H 3(3-COOH)N}(PPh 3)2 ](2)。化合物2,在甲醇溶液转化成二聚离子络合物,但在CH长时间站立2氯2或三氯甲烷3被转换成[M(Cl)的η 2 -sec 5 ħ 3(3-COOH)N}( PPh 3)]。用[2-NC 5 H 3(3-CONHPh)SeI处理[M(PPh 3)4 ]最初产生了预期的氧化加成产物[M(I)SeC