Hydrosilylation of Carbonyl Compounds Catalyzed through a Lithiated Hydrazone Derivative
作者:Álvaro Raya-Barón、Pascual Oña-Burgos、Antonio Rodríguez-Diéguez、Ignacio Fernández
DOI:10.1021/acs.organomet.8b00315
日期:2018.8.27
and fully characterized through various analytical platforms, including multinuclear (1H, 13C, 15N, 7Li) and two-dimensional NMR, high-resolution MS spectrometry, IR, and X-ray diffraction crystallography. It behaves as a binuclear species in the solid state and as a monomeric contact ion pair in solution. It has also been tested as a catalyst in hydrosilylation reactions, being the first lithium hydrazone
合成了明确定义的lit衍生物,并已通过各种分析平台进行了全面表征,包括多核(1 H,13 C,15 N,7Li)和二维NMR,高分辨率MS光谱,IR和X射线衍射晶体学。它在固态时表现为双核物质,在溶液中表现为单体接触离子对。它也已经在氢化硅烷化反应中作为催化剂进行了测试,据报道是第一个hydr在短反应时间,在室温下且催化剂负载等于或小于0.5 mol%的情况下催化不同性质的羰基化合物完全转化为醇的lithium 。动力学研究已证明相对于酮和硅烷的分数阶依赖性和在催化剂的情况下的一阶依赖性。所提出的反应机理的特征在于,将肼化锂亲核加成到硅烷的硅原子上,得到五配位的硅。