Copper(I)‐Catalyzed Enantioconvergent Borylation of Racemic Benzyl Chlorides Enabled by Quadrant‐by‐Quadrant Structure Modification of Chiral Bisphosphine Ligands
作者:Hiroaki Iwamoto、Kohei Endo、Yu Ozawa、Yuta Watanabe、Koji Kubota、Tsuneo Imamoto、Hajime Ito
DOI:10.1002/anie.201906011
日期:2019.8.5
The first copper(I)‐catalyzed enantioselective borylation of racemic benzyl chlorides has been realized by a quadrant‐by‐quadrant structure modulation of QuinoxP*‐type bisphosphine ligands. This reaction converts racemic mixtures of secondary benzyl chlorides into the corresponding chiral benzylboronates with high enantioselectivity (up to 92 % ee). The results of mechanistic studies suggest the formation
Obushak, N. D.; Ganushchak, N. I.; Lyakhovich, M. B., Journal of Organic Chemistry USSR (English Translation), 1991, vol. 27, # 8, p. 1543 - 1547
作者:Obushak, N. D.、Ganushchak, N. I.、Lyakhovich, M. B.
DOI:——
日期:——
Pd-catalyzed allylative dearomatisation using Grignard reagents
作者:Cosimo Boldrini、Syuzanna R. Harutyunyan
DOI:10.1039/d1cc05609c
日期:——
naphthyl halides is shown to be feasible by employing Grignard reagents. The high reactivity of the nucleophile allows for fast reactions and low catalyst loading, while a plethora of successfully substituted compounds illustrate the broad scope. Five membered heteroaromatic compounds are also demonstrated to be reactive under similar conditions.