New imino-pyridyl nickel(II) complexes: Synthesis, molecular structures and application as Heck coupling catalysts

被引:17
|
作者
Motswainyana, William M. [1 ]
Onani, Martin O. [1 ]
Ojwach, Stephen O. [2 ]
Omondi, Bernard [3 ]
机构
[1] Univ Western Cape, Dept Chem, ZA-7535 Bellville, South Africa
[2] Univ KwaZulu Natal, Sch Chem & Phys, ZA-3209 Scottsville, South Africa
[3] Univ KwaZulu Natal, Sch Chem & Phys, ZA-4000 Durban, South Africa
基金
新加坡国家研究基金会;
关键词
Imino-pyridyl; Nickel complexes; Crystal structure; Heck coupling reactions; C BOND FORMATION; PALLADIUM COMPLEXES; BETA-DIIMINE; ARYL; SALICYLALDEHYDE; MECHANISM; COLLOIDS; OLEFIN; BENZYL; SUZUKI;
D O I
10.1016/j.ica.2012.04.037
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Reactions of imino-pyridyl ligands, (2-pyridyl-2-thiophenemethyl) imine (L1) and (2-pyridyl-2-thiopheneethyl) imine (L2) with NiBr2(DME) gave the corresponding complexes [Ni(L1)Br-2] (1) and [Ni(L2)Br-2] (2) in good yields. Treatment of 1 and 2 with one equivalent of 2-hydroxythiophenol resulted in the displacement of the bromide ligands to form the nickel(II) thiolato complexes 3 and 4. Molecular structure of 3 confirmed that L1 and L2 bind to the nickel atom in a bidentate fashion. Complexes 1-4 catalyzed the Heck coupling reaction of iodobenzene and bromobenzene with methyl acrylate. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:93 / 97
页数:5
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