Iron-Catalyzed Allylic C-H Amination of Substituted 1,3-Dienes
作者:Siva Murru、Radhey S. Srivastava
DOI:10.1002/ejoc.201301914
日期:2014.4
A catalytic method for the selective allylic C–H amination of dienes and trienes using arylhydroxylamines has been developed. This iron-catalyzed approach involves the in situ generation of activated nitrosoarenes, which in turn react with dienes or trienes to give the corresponding aminomethyl dienes or trienes as the major products, and hetero-Diels–Alder adducts as minor products. The selectivity
Photoassisted, iron-catalyzed allylic amination of olefins with nitroarenes
作者:Radhey S. Srivastava、Manoj Kolel-Veetil、Kenneth M. Nicholas
DOI:10.1016/s0040-4039(01)02308-5
日期:2002.2
Olefins react with nitroarenes and carbon monoxide photochemically in the presence of [Cp*Fe(CO)2]2 (Cp*=η5-C5Me5) to produce N-aryl-N-allyl amines in moderate to good yields. Unsymmetrical olefins react highly regioselectively with N-functionalization at the less substituted vinylic carbon. Mechanistic probes using 2′-nitrobiphenyl, 2,3-dimethylbutadiene and nitrosobenzene suggest that neither aryl
Copper-catalyzed amination of alkenes and ketones by phenylhydroxylamine
作者:Chi-Ming Ho、Tai-Chu Lau
DOI:10.1039/b004286m
日期:——
alkenes using phenylhydroxylamine as the nitrogen fragment donor has been investigated. The best catalyst is CuCl2·2H2O, which produces moderate yields of allylamines with high regioselectivity resulting from double bond transposition. A mechanism similar to that for the molybdenum and the FePc systems is proposed. The first step in the catalytic cycle is the formation of nitrosobenzene from the oxidation
Nitrosoarene−Cu(I) Complexes Are Intermediates in Copper-Catalyzed Allylic Amination
作者:Radhey S. Srivastava、Masood A. Khan、Kenneth M. Nicholas
DOI:10.1021/ja044093m
日期:2005.5.25
Reactions of nitrosobenzene and N,N'-diethyl-4-nitrosoaniline with [Cu(CH3CN)4]PF6 produce novel homoleptic Cu(I)-nitrosoarene complexes, [Cu(ArNO)3]PF6, 1 (Ar = Ph) and 2 (Ar = 4-Et2NC6H4NO). The X-ray structure of 2 reveals that the copper is coordinated in a severely distorted trigonal planar geometry to the N-atom of the nitrosoarene ligand. Reactions of the PhNO complex 1 with olefins and an olefin/diene mixture provide evidence for its role as an intermediate and possibly the active nitrogen transfer agent in the Cu-catalyzed allylic amination of olefins by aryl hydroxylamines.