The hydrophosphorylation of aldehydes with a P-stereogenic H-phosphinate was realized by heating two compounds in a neat state or catalyzed by a base, to afford P-retention alpha-hydroxyl phosphinates. The (S-p,S-c) and other diastereomers were isolated, and their structures were confirmed by NMR spectroscopy and crystallography. (C) 2014 Elsevier Ltd. All rights reserved.
Rhodium- and Iridium-Catalyzed Asymmetric Addition of Optically Pure<i>P</i>-Chiral<i>H</i>-Phosphinates to Aldehydes Leading to Optically Active α-Hydroxyphosphinates
作者:Qiang Li、Tieqiao Chen、Qing Xu、Li-Biao Han
DOI:10.1002/chem.201600115
日期:2016.4.25
Optically active α‐hydroxyphosphinates with both C‐ and P‐stereogenic centers are obtained by rhodium‐ or iridium‐catalyzed substrate‐directed stereoselective addition of the optically pure H‐phosphinates to aldehydes. The reaction most probably proceeds by a transition‐metal‐catalyzed mechanism with hydridometal complexes as key intermediates in the catalytic cycle.