Highly Selective Methodology for the Direct Conversion of Aromatic Aldehydes to Glycol Monoesters
作者:Hashem Sharghi、Mona Hosseini Sarvari
DOI:10.1021/jo020724o
日期:2003.5.1
Al(2)O(3)/MeSO(3)H (AMA) was found to be an extremely efficient reagent for the conversion of aromatic aldehydes and diols to glycol monoesters. The remarkable selectivity achieved with this reagent is an attractive feature of the present method.
Acyl Transfer Reaction Catalyzed by Cu<sup>2+</sup>Ion Complex of a Lipophilic Hydroxyimidazole-ligand in AOT Reverse Micelles. Effects of Change of Core Solvent from Water to DMF
The transfer of acyl group of p-nitrophenyl picolinate to alcohol acceptors has been investigated kinetically in AOT reverse micelles using hexane and DMF as the bulk and the core solvents, respectively. The reaction was found to be remarkably catalyzed by a 1:2 complex of Cu2+ ion and N-dodecyl-2-hydroxymethylimidazole ligand involving the acylated ligand as the intermediate. It was also observed that the reaction in the reverse micelles was much faster than that in pure DMF.
A pharmaceutical composition containing a compound of Formula (I) for treating an opioid receptor-associated condition. Also disclosed is a method for treating an opioid receptor-associated condition using such a compound. Further disclosed are two sets of thiazolidinone compounds of formula (I): (i) compounds each having an enantiomeric excess greater than 90% and (ii) compounds each being substituted with deuterium.
Al2O3/MeSO3H (AMA) as a new reagent with high selective ability for monoesterification of diols
作者:Hashem Sharghi、Mona Hosseini Sarvari
DOI:10.1016/s0040-4020(03)00518-0
日期:2003.5
A new facile method for moncesterification of diols has been developed. A variety of diols, in particular oligoethylene glycols, were selectively monoesterified in excellent yields by reaction with aromatic and aliphatic acids in the presence Of Al2O3/MeSO3H as a new reagent without use of any solvents. (C) 2003 Elsevier Science Ltd. All rights reserved.
3-ALKOXY, THIOALKYL AND AMINO-4-AMINO-6-(SUBSTITUTED)PICOLINATES AND THEIR USE AS HERBICIDES