Synthesis of silyl iron hydride <i>via</i> Si–H activation and its dual catalytic application in the hydrosilylation of carbonyl compounds and dehydration of benzamides
作者:Shishuai Ren、Shangqing Xie、Tingting Zheng、Yangyang Wang、Shilu Xu、Benjing Xue、Xiaoyan Li、Hongjian Sun、Olaf Fuhr、Dieter Fenske
DOI:10.1039/c8dt00289d
日期:——
The hydrido silyl iron complex (o-Ph2PC6H4SiMe2)Fe(PMe3)3H (2) was obtained via the activation of the Si–H bond of the bidentate silyl ligand o-Ph2P(C6H4)SiMe2H (1) by Fe(PMe3)4. 2 showed good to excellent catalytic activity in both the reduction of aldehydes/ketones and the dehydration of benzamide. In addition, with complex 2 as a catalyst, α,β-unsaturated carbonyls could be selectively reduced to
氢化硅烷基铁络合物(o -Ph 2 PC 6 H 4 SiMe 2)Fe(PMe 3)3 H(2)是通过激活双齿甲硅烷基配体o -Ph 2 P(C)的Si–H键而获得的Fe(PMe 3)4形成6 H 4)SiMe 2 H(1)。图2在醛/酮的还原和苯甲酰胺的脱水中均显示出良好至优异的催化活性。另外,带复数2作为催化剂,α,β-不饱和羰基可以选择性地还原为相应的α,β-不饱和醇。提出了2的形成机理和催化脱水过程,并进行了部分实验验证。