Stereo- and Regioselective Gold-Catalyzed Hydroamination of Internal Alkynes with Dialkylamines
作者:Kevin D. Hesp、Mark Stradiotto
DOI:10.1021/ja109192w
日期:2010.12.29
a state-of-the-art precatalyst for the stereoselective hydroamination of internal aryl alkynes with dialkylamines to afford E-enamine products. Substrates featuring a diverse range of functional groups on both the amine (ether, sulfide, N-Boc amine, fluoro, nitrile, nitro, alcohol, N-heterocycles, amide, ester, and carboxylic acid) and alkyne (ether, N-heterocycles, N-phthalimide amines, and silyl
Tertiary amine synthesis via reductive coupling of amides with Grignard reagents
作者:Lan-Gui Xie、Darren J. Dixon
DOI:10.1039/c7sc03613b
日期:——
reductive coupling reaction of Grignard reagents and tertiary amides affording functionalised tertiary amine products via an efficient and technically-simple one-pot, two-stage experimental protocol, is reported. The reaction – which can be carried out on gram-scale using as little as 1 mol% Vaska's complex [IrCl(CO)(PPh3)2] and TMDS as the terminal reductant for the initial reductive activation step –
Achieving Aliphatic Amine Addition to Arylalkynes via the Lewis Acid Assisted Triazole-Gold (TA-Au) Catalyst System
作者:Teng Jia、Shengyu Fan、Fengmian Li、Xiaohan Ye、Wenke Zhang、Zhiguang Song、Xiaodong Shi
DOI:10.1021/acs.orglett.1c02098
日期:2021.8.6
Transition metal catalyzed intermolecular hydroamination of the arylalkynes with aliphatic amine is generally problematic due to the good coordination between amine and metal cation. With the combination of 1,2,3-triazole coordinated gold(I) catalyst (TA-Au) and Zn(OTf)2 cocatalyst, this challenging transformation was achieved with good to excellent yields and regioselectivity. Compared to previously
Straightforward three-component synthesis of diarylmethylpiperazines and 1,2-diarylethylpiperazines
作者:Stéphane Sengmany、Erwan Le Gall、Cédric Le Jean、Michel Troupel、Jean-Yves Nédélec
DOI:10.1016/j.tet.2007.02.086
日期:2007.4
Several functionalized diarylmethylpiperazines and 1,2-diarylethylpiperazines have been synthesized in moderate to high yield according to a one-step three-component coupling between an aromatic or a benzylic organozinc reagent, a piperazine derivative, and an aromatic aldehyde. The procedure can be extended to the synthesis of benzylpiperazine derivatives or beta-arylethylpiperazines toward the use of paraformaldehyde or aliphatic aldehydes. (C) 2007 Elsevier Ltd. All rights reserved.
N-(1,2-Diphenylethyl)piperazines: A new class of dual serotonin/noradrenaline reuptake inhibitor
作者:M. Jonathan Fray、Gerwyn Bish、Alan D. Brown、Paul V. Fish、Alan Stobie、Florian Wakenhut、Gavin A. Whitlock
DOI:10.1016/j.bmcl.2006.05.051
日期:2006.8
The synthesis and structure-activity relationships of a novel series of piperazine derivatives as dual inhibitors of serotonin and noradrenaline reuptake is described. Two compounds possessed comparable in vitro profiles to the dual reuptake inhibitor duloxetine. (c) 2006 Elsevier Ltd. All rights reserved.