One-Pot Synthesis of α-Branched <i>N</i>-Acylamines via Titanium-Mediated Condensation of Amides, Aldehydes, and Organometallics
作者:Chunhui Dai、Julien Genovino、Bruce M. Bechle、Matthew S. Corbett、Chan Woo Huh、Colin R. Rose、Jianmin Sun、Joseph S. Warmus、David C. Blakemore
DOI:10.1021/acs.orglett.7b00082
日期:2017.3.3
A three-component, titanium-mediated synthesis of α-branched N-acylamines from commercial or readily accessible amides, aldehydes, and organometallic reagents is reported. The transformation proceeds under mild reaction conditions and tolerates a variety of functional groups (including nitrile, carbamate, olefin, basic amine, furan, and other sensitive heteroaromatics) to generate a large umbrella
Copper-Catalyzed Reductive<i>N</i>-Alkylation of Amides with<i>N</i>-Tosylhydrazones Derived from Ketones
作者:Peng Xu、Fu-Ling Qi、Fu-She Han、Yan-Hua Wang
DOI:10.1002/asia.201600733
日期:2016.7.20
A CuI‐catalyzed reductive coupling of ketone‐derived N‐tosylhydrazones with amides is presented. Under the optimized conditions, an array of N‐tosylhydrazones derived from aryl–alkyl and diaryl ketones could couple effectively with a wide variety of (hetero)aryl as well as aliphatic amides to afford the N‐alkylated amides in high yields. The method represents the very few examples for reliably accessing
Platinum-Catalyzed Intermolecular Hydroamination of Vinyl Arenes with Carboxamides
作者:Hua Qian、Ross A. Widenhoefer
DOI:10.1021/ol050745f
日期:2005.6.1
Reaction of benzamide with 4-methylstyrene catalyzed by a 1:2 mixture Of [PtCl2(H2C = CH2)](2) and P(4-C6H4CF3)(3) (5 mol %) in mesitylene at 140 degrees C for 24 h led to the isolation of M(1-p-tolylethyl)benzamide in 85% yield. Electron-rich, electron-poor, and hindered vinyl arenes underwent Markovnikov hydroamination with a range of carboxamides and amide derivatives in moderate to good yield with excellent regioselectivity.