Imidazolium-based organoiridium-functionalized periodic mesoporous organosilica boosts enantioselective reduction of α-cyanoacetophenones, α-nitroacetophenones, and β -ketoesters
作者:Boxin Deng、Wei Xiao、Cuibao Li、Feng Zhou、Xuelin Xia、Tanyu Cheng、Guohua Liu
DOI:10.1016/j.jcat.2014.09.019
日期:2014.12
microscopy confirms a highly ordered dimensional-hexagonal mesostructure. This bifunctional heterogeneous catalyst displays excellent catalytic performance in the enantioselective reduction of α-cyano and α-nitroacetophenones. As expected, incorporation of imidazolium-functionality within hydrophobic periodic mesoporous organosilica promotes catalytic activity and enantioselectivity. In addition, this heterogeneous
Enantioselective Reduction of α-Cyano and α-Nitro Substituted Acetophenones Promoted by a Bifunctional Mesoporous Silica
作者:Boxin Deng、Tanyu Cheng、Meng Wu、Jinyu Wang、Guohua Liu
DOI:10.1002/cctc.201300340
日期:2013.10
Pores that put your reaction in a spin! A recoverable mesoporoussilica exhibits excellent catalytic activity and enhanced enantioselectivity for the reduction of α‐cyano and α‐cyanoacetophenones that ascribes the synergistic effect of its phase‐transfer functionalized cetyltrimethylammonium bromide and confined chiral organoiridium catalytic nature.
Seawater-Based Biocatalytic Strategy: Stereoselective Reductions of Ketones with Marine Yeasts
作者:Immacolata Serra、Benedetta Guidi、Gaetan Burgaud、Martina L. Contente、Patrizia Ferraboschi、Andrea Pinto、Concetta Compagno、Francesco Molinari、Diego Romano
DOI:10.1002/cctc.201600947
日期:2016.10.20
use of seawater to perform bio‐processes is a sustainable alternative. In this work, we used marine yeasts from deep‐sub‐seafloor sediments grown in seawater as bio‐catalysts to perform the stereoselectivereduction of different ketones, and the bio‐transformations were accomplished in seawater as well. Strains of Meyerozyma guilliermondii and Rhodotorula mucilaginosa were able to reduce different aromatic
Process for preparing 3-heteroaryl-3-hydroxypropanoic acid derivatives
申请人:——
公开号:US20040181058A1
公开(公告)日:2004-09-16
The invention relates to a process for preparing enantiomer-enriched 3-heteroaryl-3-hydroxypropanoic acid derivatives and 3-heteroaryl-1-aminopropan-3-ols, and to their use.
The disclosure herein relates to a new family of haloalkyl oxazolidinyl derivatives as antidotal compounds to reduce injury to crop plants by a variety of herbicides. The antidotal compounds are characterized particularly by having heterocyclyl or spiroheterocyclyl radicals attached to the 5-position of haloalkyl oxazolidine compounds and are especially useful as in-can antidotes against injury by acetanilide and thiocarbamate herbicides to corn, sorghum, soybeans, wheat, rice and other crops.