Rhodium-Catalyzed Asymmetric Addition of Arylboronic Acids to β-Phthaliminoacrylate Esters toward the Synthesis of β-Amino Acids
作者:Takahiro Nishimura、Jun Wang、Makoto Nagaosa、Kazuhiro Okamoto、Ryo Shintani、Fuk-yee Kwong、Wing-yiu Yu、Albert S. C. Chan、Tamio Hayashi
DOI:10.1021/ja909642h
日期:2010.1.20
Rhodium-catalyzed asymmetric 1,4-addition of arylboronic acids to beta-phthaliminoacrylate esters took place efficiently to give high yields of beta-aryl-beta-amino acid esters with 96-99% enantioselectivity, which was realized by use of a hydroxorhodium/chiral diene complex.
Nickel-catalyzed enantioselective umpolung hydrogenation for stereoselective synthesis of β-amido esters
作者:Jianrong Steve Zhou、Siyu Guo、Xiaohu Zhao、Yonggui Robin Chi
DOI:10.1039/d1cc05257h
日期:——
Nickel complexes ligated by strongly donating diphosphines catalyze enantioselective hydrogenation for the preparation of acyclic and cyclic β-amido esters. A combination of aceticacid and indium powder provides protons and electrons to form nickel hydrido complexes under umpolung hydrogenation conditions.