Highly regio- and enantioselective catalytic asymmetric hydroboration of α-substituted styrenyl derivatives
作者:Clément Mazet、David Gérard
DOI:10.1039/c0cc01547d
日期:——
The catalytic asymmetric hydroboration of a variety of 1,1-disubstituted olefins has been achieved with excellent yields, perfect regioselectivity and in some cases, high levels of enantioselectivity using readily accessible iridium catalyst.
Cobalt-Catalyzed Enantioselective Hydroboration of 1,1-Disubstituted Aryl Alkenes
作者:Lei Zhang、Ziqing Zuo、Xiaolong Wan、Zheng Huang
DOI:10.1021/ja5093908
日期:2014.11.5
We report the synthesis of cobalt complexes of novel iminopyridine-oxazoline (IPO) ligands and their application to the asymmetric hydroboration of 1,1-disubstitutedarylalkenes. The new catalysts afforded α-alkyl-β-pinacolatoboranes with exclusive regioselectivity in high yields with up to 99.5% ee. Furthermore, we have applied this method to an efficient synthesis of naproxen.