A Novel General Route for the Preparation of Enantiopure Imidazolines
作者:Nicola A. Boland、Mike Casey、Stephen J. Hynes、Jonathan W. Matthews、Martin P. Smyth
DOI:10.1021/jo0111006
日期:2002.5.1
A novel procedure for the preparation of enantiopure 1,4-disubstituted 2-imidazolines is reported. Enantiopure beta-amino alcohols are converted into N-hydroxyethylamides, which are reacted with excess thionyl chloride, or with thionyl chloride followed by phosphorus pentachloride to yield N-chloroethylimidoyl chlorides. These intermediates are treated with amines and anilines to produce N-chloroethylamidines
Casey, Mike; Smyth, Martin P., Synlett, 2003, # 1, p. 102 - 106
作者:Casey, Mike、Smyth, Martin P.
DOI:——
日期:——
A long-range chiral relay via tertiary amide group in asymmetric catalysis: new amino acid-derived N,P-ligands for copper-catalysed conjugate addition
作者:Andrei V. Malkov、John B. Hand、Pavel Kočovský
DOI:10.1039/b304131j
日期:——
New N,P-ligands 4-6, derived from valinol and prolinol, respectively, have been developed for the asymmetric, copper(I)-catalysed conjugate addition of diethylzinc to unsaturated ketones; the tertiary amide group has been shown to effectively relay the chiral information from the ligand backbone to the active centre.