The promoted Tishchenko reaction and catalytic intermediate by 2-aminopyrrolyl dilithium compounds
作者:Zhiqiang Guo、Xuehong Wei、Hongbo Tong、Jianbin Chao、Diansheng Liu
DOI:10.1016/j.jorganchem.2015.02.023
日期:2015.5
The dimerization of aldehydes to the analogous carboxylic esters (Tischenko reaction) has been achieved in impressive yields using the dilithium compounds containing bidentate di-anionic pyrrolyl ligands as initiators. The initiated intermediate [2-(tBuNCH)C4H3NLi][PhCH2OLi(TMEDA)]}2 was isolated and characterized by satisfactory C, H and N microanalysis, 1H, 13C1H} and 7Li NMR spectra in pyridine-d5
使用含有双齿二阴离子吡咯基配体的二锂化合物作为引发剂,已将醛二聚为类似的羧酸酯(Tischenko反应)。分离了起始中间体[2-(t BuNCH)C 4 H 3 NLi] [PhCH 2 OLi(TMEDA)]} 2并通过令人满意的C,H和N微分析,1 H,13 C 1 H}和吡啶-d 5在环境温度下的7 Li NMR光谱,以及单晶X射线结构数据。该方法涉及2-氨基吡咯基二锂化合物与醛的氧化还原反应。
Thorium complexes possessing expanded ring N-heterocyclic iminato ligands: synthesis and applications
作者:Tapas Ghatak、Shani Drucker、Natalia Fridman、Moris S. Eisen
DOI:10.1039/c7dt02126g
日期:——
Six and seven membered N-heterocyclic iminato ligands (L) are introduced allowing access a new class of Th(IV) complexes of the type Cp*2Th(L)(CH3). These complexes were studied in the Tishchenko reaction. Stoichiometric reactions together with kinetic and thermodynamic studies permit us to propose a plausible mechanism.