The well‐defined three coordinated electronically unsaturated cationic organoaluminum complex [((2,6‐iPr2C6H3N)P(Ph2)}2N)AlMe]+[MeB(C6F5)3]− (1), has been utilized to catalyze the cyanosilylation of aldehydes and ketones undermild and solvent‐free conditions. Moreover, catalyst 1 showed high chemoselective cyanosilylation of aldehydes over ketones, nitriles and olefins. The multinuclear NMR investigations
定义明确的三配位电子不饱和阳离子有机铝络合物[[(2,6 - i Pr 2 C 6 H 3 N)P(Ph 2)} 2 N)AlMe] + [MeB(C 6 F 5)3 ] −(1)已用于在温和无溶剂条件下催化醛和酮的氰基硅烷化反应。此外,催化剂1显示醛在酮,腈和烯烃上的高化学选择性氰基硅烷化。该多核NMR调查显示经由之间路易斯加成物形成的是硅氰化反应进行1 然后激活TMSCN(Si-CN键),然后在活化硅烷的Si中心对羰基氧进行亲核攻击并形成产物。
Bifunctional 2D Cd(II)-Based Metal–Organic Framework as Efficient Heterogeneous Catalyst for the Formation of C–C Bond
one-dimensional opening channels along a- and c-axes. The incorporation of Cd metal centers and −NH groups of amides endows Cd-PBA rich open metal sites and Lewis basic sites, which are applied as an efficient catalyst for the important Knoevenagel condensation and cyanosilylation of aldehyde reactions. This Cd-PBA presents highly efficient catalytic activity and recyclability for both Knoevenagel condensation
A triangular metallosalen-based metallacycle was constructed and used to cyanosilylate a wide range of benzaldehydes with trimethylsilyl cyanide.
一个基于金属赛伦的金属环被构建并用于使用三甲基硅氰化物对一系列苯甲醛进行氰硅化反应。
A Polyhedral Metal–Organic Framework Based on Supramolecular Building Blocks: Catalysis and Luminescent Sensing of Solvent Molecules
作者:Xiao-Ming Lin、Ji-Liang Niu、Pei-Xian Wen、Ying Pang、Lei Hu、Yue-Peng Cai
DOI:10.1021/acs.cgd.6b00779
日期:2016.8.3
A multifunctional polyhedral metal–organicframework with a pcu network topology based on supramolecular building blocks can be constructed by the reaction of Eu(NO3)3 and pyridine-3,5-dicarboxylic acid (H2PDC). The basic EuIII paddlewheel nodes as secondary building units (SBUs) are connected by PDC ligands to generate nanosized metal–organic cuboctahedra (MOCs), which are further connected by sharing
Enantioselective cyanosilylation of aldehydes catalyzed by a multistereogenic salen–Mn(<scp>iii</scp>) complex with a rotatable benzylic group as a helping hand
A multistereogenic salen–Mn(iii) complex bearing an aromatic pocket and two benzylic groups as helping hands was found to be efficient in the catalysis of asymmetric cyanosilylation.