Air-stable μ2-hydroxyl bridged cationic binuclear complexes of zirconocene perfluorooctanesulfonates: their structures, characterization and application
binuclear structures: (i) [CpZr(OH2)3]2(μ2-OH)2(OSO2C8F17)4·2THF·4H2O (1a·2THF·4H2O), (ii) [n-BuCpZr(OH2)3]2(μ2-OH)2(OSO2C8F17)4·6H2O (2a·6H2O), and (iii) [t-BuCpZr(OH2)3]2(μ2-OH)2(OSO2C8F17)4·2C3H6O·8H2O (3a·2C3H6O·8H2O). The ligands of water and organic molecules in the complexes originated from the moist air and solvent during their recrystallization. These complexes were characterized with different
Highly stereoselective facile synthesis of β-amino carbonyl compounds via a Mannich-type reaction catalyzed by γ-Al<sub>2</sub>O<sub>3</sub>/MeSO<sub>3</sub>H (alumina/methanesulfonic acid: AMA) as a recyclable, efficient, and versatile heterogeneous catalyst
作者:Hashem Sharghi、Mahboubeh Jokar
DOI:10.1139/v09-141
日期:2010.1
ketones, aromatic aldehydes, and aromaticamines catalyzed efficiently by γ-Al2O3/MeSO3H (alumina/methanesulfonic acid: AMA) as a heterogeneous catalyst, which were carried out in EtOH at ambient temperature to afford the corresponding β-amino ketones in good yields and high stereoselectivities in favor of the anti isomer, was described for the first time. It was found that this catalyst could be completely
Diaryliodonium salts as efficient Lewis acid catalysts for direct three component Mannich reactions
作者:Yanxia Zhang、Jianwei Han、Zhen-Jiang Liu
DOI:10.1039/c5ra00209e
日期:——
Diaryliodonium(iii) salts, as highly active and versatile Lewis acid catalysts for the direct three component Mannich reaction under solvent free conditions, have been investigated.
Aluminized Polyborate: A New and Eco-friendly Catalyst for One-pot Multicomponent Synthesis of 1,3-Diaryl-3-(arylamino)propan-1-ones <i>via</i> Mannich Reaction
作者:Anil S. Mali、Prerna Ganwir、Ganesh U. Chaturbhuj
DOI:10.1080/00304948.2022.2057141
日期:2022.7.4
Published in Organic Preparations and Procedures International: The New Journal for Organic Synthesis (Vol. 54, No. 4, 2022)
Saccharose was applied as an efficient and homogenous catalyst for a one-pot, three-component Mannich reaction for the formation of beta-aminoketones from aromatic aldehydes, anilines, and acetophenone at ambient temperature in excellent yields. This protocol has the following advantages: mild conditions, high yields, clean reaction profiles, operational simplicity, and environmentally benign and simple work-up procedures. (C) 2013 Nourallah Hazeri. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.