Rh(I)-catalyzed asymmetric addition of arylboronic acids to NH isatins
作者:Jiangyang Gui、Guihua Chen、Peng Cao、Jian Liao
DOI:10.1016/j.tetasy.2012.04.013
日期:2012.4
The transition metal-catalyzed asymmetric variant of the title reaction is normally limited to N-protected isatins. However, Rh(I)/chiral sulfoxide phosphine complexes were found to catalyze the enantioselective addition of arylboronicacids to NH isatins under mild conditions. A variety of chiral 3-aryl-3-hydroxyl-2-oxindoles were obtained with high yields and with good to excellent enantioselectivities
Concave P-Stereogenic Phosphorodiamidite Ligands for Enantioselective Rh(I) Catalysis
作者:Nidal Saleh、Céline Besnard、Jérôme Lacour
DOI:10.1021/acs.orglett.4c00371
日期:2024.3.22
The development of a new class of concave P-stereogenic phosphorodiamidite ligands, derived from Tröger’s bases (TBs), is explored. These ligands, characterized by their remarkable stability and unique structural geometry around the P atom, are used in asymmetric Rh(I)-catalyzed additions of boronic acids to NH-isatins resulting in excellent reactivities and reasonable enantioselectivity (er up to