Synthesis of substituted (α-methylene lactams by rhodium catalysed carbonylation of acetylenic amines
摘要:
Reactions of gamma- and beta-aminoalkynes, (2) and (5) with hydrogen and carbon monoxide in the presence of rhodium catalysts give substituted alpha-methylene-2-piperidinones (7) and 2-pyrrolidinones (11).
Preparation and reactions of rhodium complexes of some alkynylamines
作者:Eva M Campi、W.Roy Jackson
DOI:10.1016/0022-328x(96)06377-2
日期:1996.10
Reactions of [Rh(CO)2Cl]2 with the alkynylamines 1 and 2 give the corresponding alkynylamine dicarbonyl rhodium(1) chloride complexes 3 and 4 in which ligand bonding is monodenate through nitrogen. Solutions of these complexes in benzene or chloroform isomerise on standing to give complexes involving 2-substituted-pyrroline derivatives as ligands. Attempts to convert this reaction into a catalytic