A new environmentally friendly approach for the synthesis of idrocilamide (1), a marketed myorelaxant and anti-inflammatory agent, is reported herein. The synthetic strategy involves a solvent-free aminolysis reaction catalyzed by zinc-containing species (ZnCl2 , montmorilloniteK10 (MK10) impregnated with ZnCl2 or eco-catalysts). The latter have been prepared from the aerial parts of Lolium perenne
A novel carbonylative decomplexation of alkyne-dicobalt hexacarbonyls, i.e. hydrocarbamoylation of alkynes, was carried out by reaction of the complexes with 10 equiv. of primary and secondary amines.
Generation and cycloadditions of 2-(N-acylamino)-1-thia-1,3-dienes part III: Control of diastereoselectivity using homochiral auxiliaries
作者:Andrew S. Bell、Colin W.G. Fishwick、Jessica E. Reed
DOI:10.1016/s0040-4020(98)00067-2
日期:1998.3
Activated 2-(N-acylamino)-1-thia-1,3-dienes undergo efficientdiastereoselectiveDiels-Alder cycloadditions giving access to thiopyrans of high optical purity. By variation of the position and nature of the chiral auxiliaries we have been able to induce a high degree of facial selectivity in endo selective cycloadditions and induce total facial control in exo selective cycloadditions.
Efficient Synthesis of New <i>N</i>-Benzyl- or <i>N</i>-(2-Furylmethyl)cinnamamides Promoted by the ‘Green’ Catalyst Boric Acid, and Their Spectral Analysis
New N-benzyl- or N-(2-furylmethyl)cinnamamides were prepared in good to excellent yields by amidation reactions between cinnamic acid and benzylamines or (2-furylmethyl)amine in the presence of 5 mol% boric acid. All the cinnamamides were characterized by IR and 1H and 13C NMR spectroscopy.