|
|||||
|
|
Cobalt-Catalyzed Regio- and Stereoselective Hydroboration of Allenes |
|
| Authors: | Can Li Dr Zheng Yang Lei Wang Prof Dr Yinlong Guo Prof Dr Zheng Huang Prof Dr Shengming Ma |
| Institution: | 1. State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032 P. R. China
University of Chinese Academy of Sciences, Beijing, 100049 P. R. China These authors contributed equally to this work.;2. State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032 P. R. China These authors contributed equally to this work.;3. State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032 P. R. China |
| Abstract: | An efficient pincer-ligand-based cobalt-complex-catalyzed allene hydroboration affording Z-allylic boronates is described. The reaction demonstrates an excellent regio- as well as Z-stereoselectivity and a wide substrate scope that tolerates many functional groups. Based on solvent-assisted electrospray ionization mass spectrometry (SAESI-MS) studies, a rationale for the cobalt-catalyzed hydroboration involving the highly selective insertion of an allene into the Co−H bond to form Z-allylic cobalt intermediates is proposed. |
| Keywords: | Allene Cobaltkatalyse Hydroborierungen Regioselektivität Stereoselektivität |