Nafion®-supported oxovanadium-catalyzed hydrophosphonylation of aldehydes under solventless conditions
作者:Shiue-Shien Weng、Guan-Ying Lin、Hsin-Chun Li、Kuo-Chen Yang、Teng-Mao Yang、Hui-Chi Liu、Syuan-Hua Sie
DOI:10.1002/aoc.2879
日期:2012.9
A Nafion® resin‐supported oxovanadium(IV) catalyst was readily prepared via ion‐exchange method. This solid vanadyl perfluorinated sulfonate catalyst was used as an efficient and recoverable catalyst for the hydrophosphonylation of various aldehydesundersolventlessconditions at room temperature. The catalyst could be recovered by simple filtration and reused without a significant loss of activity
Highly Enantioselective Aerobic Oxidation of α-Hydroxyphosphonates Catalyzed by Chiral Vanadyl(V) Methoxides Bearing <i>N</i>-Salicylidene-α-aminocarboxylates
作者:Vijay D. Pawar、Sampada Bettigeri、Shiue-Shien Weng、Jun-Qi Kao、Chien-Tien Chen
DOI:10.1021/ja060639o
日期:2006.5.1
An unprecedented vanadyl(V) methoxide complex 4 derived from 3,5-dibromo-N-salicylidene-l-tert-leucinate enables highly enantioselective aerobic oxidations of α-hydroxyphosphonates at ambient temperature with selectivity factors ranging from 3 to >99.