Amine Activation: Synthesis of <i>N</i>-(Hetero)arylamides from Isothioureas and Carboxylic Acids
作者:Yan-Ping Zhu、Sergey Sergeyev、Philippe Franck、Romano V. A. Orru、Bert U. W. Maes
DOI:10.1021/acs.orglett.6b02247
日期:2016.9.16
A novel method for N-(hetero)arylamide synthesis based on rarely explored amine activation, rather than classical acid activation, is reported. The activated amines are easily prepared using a three-component reaction with commercial reagents. The new method shows a broad scope including challenging amides not (efficiently) accessible via classical protocols.
The present invention relates to a process for preparing N-(1-alkenyl)carboxamides of the formula I, which comprises reacting a carboxamide of the formula II with an alkyne of the formula III in the presence of a catalyst selected from among carbonyl complexes, halides and oxides of rhenium, manganese, tungsten, molybdenum, chromium and iron.
A Convenient Synthesis of<i>N</i>-Aryl Benzamides by Rhodium-Catalyzed<i>ortho</i>-Amidation and Decarboxylation of Benzoic Acids
作者:Xian-Ying Shi、Ke-Yan Liu、Juan Fan、Xue-Fen Dong、Jun-Fa Wei、Chao-Jun Li
DOI:10.1002/chem.201406031
日期:2015.1.26
The rhodium‐catalyzed amidation of substituted benzoic acids with isocyanates by directed CH functionalization followed by decarboxylation to afford the corresponding N‐aryl benzamides is demonstrated, in which the carboxylate serves as a unique, removable directing group. Notably, less common meta‐substituted N‐aryl benzamides are generated readily from more accessible para‐ or ortho‐substituted
The influence of reaction conditions on the Diels–Alder cycloadditions of 2-thio-3-chloroacrylamides; investigation of thermal, catalytic and microwave conditions
作者:Marie Kissane、Denis Lynch、Jay Chopra、Simon E. Lawrence、Anita R. Maguire
DOI:10.1039/c0ob00368a
日期:——
The DielsâAlder cycloadditions of cyclopentadiene and 2,3-dimethyl-1,3-butadiene to a range of 2-thio-3-chloroacrylamides under thermal, catalytic and microwave conditions is described. The influence of reaction conditions on the outcome of the cycloadditions, in particular the stereoselectivity and reaction efficiency, is discussed. While the cycloadditions have been attempted at the sulfide, sulfoxide and sulfone levels of oxidation, use of the sulfoxide derivatives is clearly beneficial for stereoselective construction of DielsâAlder cycloadducts.
BENZAMIDE DERIVATIVES AND THEIR USE FOR TREATING CNS DISORDERS
申请人:Galley Guido
公开号:US20090036420A1
公开(公告)日:2009-02-05
The present invention relates to methods of treating CNS disorders with a compound of formula I
wherein
X, R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, and R
8
are as defined in the specification and pharmaceutically acceptable acid addition salts thereof.