Novel Palladium(II)-Catalyzed Cyclization of Aziridines and Sulfur Diimides
作者:Jin-Ook Baeg、Howard Alper
DOI:10.1021/ja00083a007
日期:1994.2
cyclization reaction of aziridines and sulfurdiimides, in toluene, affording imidazolidinethiones in 52-70% yield. Reaction of an aziridine, labels with 13 C at one of the ring carbons, with a sulfurdiimide resulted in incorporation of the label at the 2- and 5-positions of the imidazolidinethione. Thiazolidinimine formation results from the palladium(II)-catalyzed reaction of an aziridine with phenyl isothiocyanate
Regiospecific metal-catalyzed ring expansion of aziridines to .beta.-lactams
作者:Howard Alper、Fabio Urso、David J. H. Smith
DOI:10.1021/ja00360a045
日期:1983.10
Carbonylation regiospecifique, catalysee par des complexes de rhodium, d'aziridines en azetidinones-2-
羰基化区域特异性,催化剂 par des complexes de rhodium, d'aziridines en azetidinones-2-
Enantiospecific and stereospecific rhodium(I)-catalyzed carbonylation and ring expansion of aziridines. Asymmetric synthesis of .beta.-lactams and the kinetic resolution of aziridines
作者:Serge Calet、Fabio Urso、Howard Alper
DOI:10.1021/ja00185a023
日期:1989.2
Regiospecific palladium-catalyzed cycloaddition of aziridines and carbodiimides
作者:Jin Ook Baeg、Howard Alper
DOI:10.1021/jo00027a030
日期:1992.1
Bis(benzonitrile)palladium dichloride is an effective catalyst for the cycloaddition reaction of aziridines with carbodiimides to form imidazolidenimines in 40-94% yields. The process is a regiospecific one, involving cleavage of the more substituted ring carbon-nitrogen bond. An X-ray structure determination of one of the imidazolidinimines, together with spectral and analytical data for the products of all the cycloaddition reactions, provided the basis for the structure assignment.