Highly Active Copper-Network Catalyst for the Direct Aldol Reaction
作者:Hidetoshi Ohta、Yasuhiro Uozumi、Yoichi M. A. Yamada
DOI:10.1002/asia.201100284
日期:2011.9.5
The development of a highlyactive solid‐phase catechol–copper network catalyst for directaldolreaction is described. The catalyst was prepared from an alkyl‐chain‐linked bis(catechol) and a copper(II) complex. The directaldolreaction between carbonyl compounds (aldehydes and ketones) and methyl isocyanoacetate was carried out using 0.1–1 mol % [Cu] catalyst to give the corresponding oxazolines
In-Water Dehydrative Alkylation of Ammonia and Amines with Alcohols by a Polymeric Bimetallic Catalyst
作者:Hidetoshi Ohta、Yoshinari Yuyama、Yasuhiro Uozumi、Yoichi M. A. Yamada
DOI:10.1021/ol201422s
日期:2011.8.5
An in-water dehydrative alkylation with a novel heteroblmetallic polymeric catalyst Is described. Thus, a boron iridium heteroblmetallic polymeric catalyst was prepared by ionic convolution of a poly(catechol borate) and an Iridium complex. The alkylation of ammonia and amines with alcohols, alkylating agents, was performed with 1 mol % Ir of the heterogeneous catalyst In water without the use of organic solvents under aerobic conditions to give the corresponding alkylated amines.
Pettersson, T.; Parker, Vernon D.; Ronlan, Alvin, Acta chemica Scandinavica. Series B: Organic chemistry and biochemistry, 1983, vol. 37, # 8, p. 675 - 680
作者:Pettersson, T.、Parker, Vernon D.、Ronlan, Alvin
DOI:——
日期:——
Polymeric Bimetallic Catalyst-Promoted In-Water Dehydrative Alkylation of Ammonia and Amines with Alcohols
A dehydrative alkylation with three kinds of Ir/B heterobimetallic polymeric catalysts in water is reported. The polymeric heterobimetallic catalysts were readily prepared by ionic convolution of a poly(catechol borate) and iridium complexes. The N-alkylation of ammonia and amines with alcohols, as alkylating agents, was carried out with a heterogeneous catalyst (1 mol% Ir) at 100 degrees C without the use of organic solvents under aerobic and aqueous conditions to afford the corresponding alkylated amines in high yield.