This paper describes a novel palladium-catalyzedoxidativecyclization of bromoalkynes with N-allylamines via cascade formation of C-N and C-C bonds. During this process, the bromine atom was retained to form 3-bromo-pyrroles, which can undergo the subsequent structural modifications.
A nickel-catalyzed aminofluoroalkylative cyclization of unactive alkenes with iododifluoromethyl ketones was developed to construct versatile difluoroalkylated Nitrogen-containing heterocycles including aziridines, pyrrolidines and piperidines in moderate to high yields. This method features a broad substrate scope and has been demonstrated on gram scale.
An Air-Stable Nickel(0) Phosphite Precatalyst for Primary Alkylamine C-N Cross-Coupling Reactions
作者:Sven S. Kampmann、Brian W. Skelton、Duncan A. Wild、George A. Koutsantonis、Scott G. Stewart
DOI:10.1002/ejoc.201500734
日期:2015.9
preparation of a new air-stablenickelphosphite based catalyst for unique C–N bond forming processes. Specifically, (BINAP)Ni[P(OPh)3]2, is presented as an effective catalyst for a range of amination reactions between aryl halides and primaryalkylamines. The results are supported by relevant kinetic studies, DFT calculations and a catalytic cycle indicating possible reaction intermediates.
Preparation of N-arylamines from 2-oxo-7-azobicyclo[4.1.0]heptanes
作者:M. Teresa Barros、Suvendu S. Dey、Christopher D. Maycock、Paula Rodrigues
DOI:10.1016/j.tet.2012.05.054
日期:2012.8
A wide range of N-phenylated secondary amines were prepared directly from 2-oxo-7-azobicyclo[4.1.0]heptanes using 4-nitrobenzoic acid as acid catalyst. The intermediate enol esters could also be isolated under similar conditions. A catalytic cycle is proposed.
Metal-Free Synthesis of Secondary Arylamines: An Aliphatic-to-Aromatic Transformation
作者:M. Teresa Barros、Suvendu S. Dey、Christopher D. Maycock
DOI:10.1002/ejoc.201201263
日期:2013.2
An efficient method for the N-arylation of primary and some secondary amines using 2-halocyclohex-2-enones in an aliphatic-to-aromatictransformation in the presence of a substoichiometric amount of pTsOH has been developed.