Cyclization of N-acetyl-N-(ortho-chlorophenyl)-4-aminobut-2-enenitrile with zerovalent nickel complexes: conformational analysis of the N-3-cyano-prop-2-enyl chain
作者:J. Gonzalo Rodriguez、Laureano Canoira
DOI:10.1039/p29940001393
日期:——
e with zerovalentnickelcomplexes, prepared from bis(acetylacetonate)nickel(II), with either pyridine or triphenylphosphine as ligands, and triethylaluminium as reducing agent has been carried out. The α-methylene protons show a diastereotopic effect which could be explained by a rigid bridged hydrogen bound through the oxygen atom of the acetanilide group to one of the α-methylene protons and partially