A great variety of imines were efficiently isolated in high yields from the reaction of aldehydes and amines in ionic liquids. The ionic liquids could be recovered and reused for at least five cycles without loss in the yields being a useful alternative to dichloromethane or diethyl ether, which are the commonly used solvents for this reaction.
New Modification of the Intramolecular α-Amidoalkylation for the Synthesis of 2-Acyl-1,2,3,4-tetrahydroisoquinolines
作者:Atanas P. Venkov、Ludmil K. Lukanov
DOI:10.1055/s-1989-27153
日期:——
2-Acyl-1,2,3,4-tetrahydroisoquinolines are obtained from N-methylene- or N-benzylidene-2-phenylethylamines and acyl chlorides or carboxylic acids/thionyl chloride in the presence of potassium iodide at room temperature.