Homoleptic iron(<scp>ii</scp>) and cobalt(<scp>ii</scp>) bis(phosphoranimide) complexes for the selective hydrofunctionalization of unsaturated molecules
作者:Tao Bai、Trevor Janes、Datong Song
DOI:10.1039/c7dt02427d
日期:——
synthesized and characterized as dimeric structures by crystallographic studies. Iron complex A can catalyze the hydroboration reaction of aldehydes and ketones. Cobalt complex B outperformed its iron counterpart in hydrogenations of several typical alkenes and alkynes under mild conditions. Poisoning experiments indicate that the Co(II)/HB(pin) catalytic system could be homogeneous.
Ytterbium-Catalyzed Hydroboration of Aldehydes and Ketones
作者:Weifan Wang、Xingchao Shen、Fengyi Zhao、Huan Jiang、Weiwei Yao、Sumod A. Pullarkat、Li Xu、Mengtao Ma
DOI:10.1021/acs.joc.7b02076
日期:2018.1.5
efficient catalyst for the hydroboration of a wide range of aldehydes and ketones with pinacolborane (HBpin) at room temperature. The protocol requires low catalyst loadings (0.1–0.5 mol %) and proceeds rapidly (>99% conversion in <10 min). Additionally, catalyst 1 shows a good functional group tolerance even toward the hydroxyl and amino moieties and displays chemoselective hydroboration of aldehydes over
Efficient and selective carbonyl hydroboration catalyzed by a lithium NCN-Pincer magnesiate complex [Li(THF) 4 ][NCN-MgBr 2 ]
作者:Man Luo、Jia Li、Qian Xiao、Shilong Yang、Fan Su、Mengtao Ma
DOI:10.1016/j.jorganchem.2018.04.040
日期:2018.8
The well-defined lithium NCN-Pincer magnesiate complex [Li (THF)4][NCN-MgBr2] 2 based on a bis(imino)aryl ligand has been successfully prepared, crystallographic characterized and employed as an efficient catalyst for hydroboration of a wide range of aldehydes and ketones with pinacolborane (HBpin) at room temperature. Both aldehyde and ketone hydroboration proceeded efficiently (>99% conversion in
Cobalt(II) Coordination Polymer as a Precatalyst for Selective Hydroboration of Aldehydes, Ketones, and Imines
作者:Jing Wu、Haisu Zeng、Jessica Cheng、Shengping Zheng、James A. Golen、David R. Manke、Guoqi Zhang
DOI:10.1021/acs.joc.8b01094
日期:2018.8.17
Highly effective hydroboration precatalyst is developed based on a cobalt(II)-terpyridine coordination polymer (CP). The hydroboration of ketones, aldehydes, and imines with pinacolborane (HBpin) has been achieved using the recyclable CP catalyst in the presence of an air-stable activator. A wide range of substrates containing polar C═O or C═N bonds have been hydroborated selectively in excellent yields
Silver-Catalyzed Hydroboration of C–X (X = C, O, N) Multiple Bonds
作者:Vipin K. Pandey、Chandra Shekhar Tiwari、Arnab Rit
DOI:10.1021/acs.orglett.1c00106
日期:2021.3.5
AgSbF6 was developed as an effective catalyst for the hydroboration of various unsaturated functionalities (nitriles, alkenes, and aldehydes). This atom-economic chemoselective protocol works effectively under low catalyst loading, base- and solvent-free moderate conditions. Importantly, this process shows excellent functional group tolerance and compatibility with structurally and electronically diverse