作者:Wang, Qiao Feng、Sun, Xiao Li、Zhang, Sheng Yong、Qin, Xiang Yang、Zhao, Yan
DOI:——
日期:——
Lohray; Bhushan, Vidya; Reddy, G. Jaipal, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2002, vol. 41, # 1, p. 161 - 168
作者:Lohray、Bhushan, Vidya、Reddy, G. Jaipal、Reddy, A. Sekar
DOI:——
日期:——
Catalytic asymmetric dihydroxylation of cis-disubstituted olefins
作者:Lisa Wang、K. Barry Sharpless
DOI:10.1021/ja00045a042
日期:1992.9
Concentration Dependence of the Sharpless Asymmetric Amidohydroxylation of Isopropyl Cinnamate
作者:Peter G. M. Wuts、Andrew M. Anderson、Michael P. Goble、Sarah E. Mancini、Ronald J. VanderRoest
DOI:10.1021/ol006198+
日期:2000.8.1
[GRAPHICS]A need to prepare large quantities of phenylisoserine for the semisynthesis of paclitaxel prompted us to examine the Sharpless amidohydroxylation reaction to see if it could be run at concentrations greater than those reported in the literature. During these investigations, we discovered that the amount of amidoalcohol produced in the reaction decreased while the diol side product increased as the concentration increased. We discovered that acetamide suppresses this side reaction and allows us to run the chemistry at 0.1 g/mL rather than the 0.014 g/mL reported in the literature.
Heterogeneous asymmetric catalytic aminohydroxylation promoted by a bis-Cinchona alkaloid derivative supported onto an insoluble organic polymeric matrix
By using a bis(quinidinyl)phthalazine derivative linked to an insoluble organic polymer, 87% e.e. was obtained in the osmium-mediated catalytic heterogeneous asymmetric aminohydroxylation of isopropyl trans-cinnamate. The recycling of the polymeric ligand-osmium complex was also investigated. (C) 2000 Elsevier Science Ltd. All rights reserved.