Amide Conformational Switching Induced by Protonation of Aromatic Substituent
摘要:
Introduction of an electron-withdrawing group on the aromatic ring of N-methylacetanilide decreased the ratio of the cis conformer, and the ratio correlates well with the Hammett sigma values of the substituents. These steric properties can be applied to achieve amide conformational swiching by protonation at the aromatic substituent of 4-[bis(dimethylamino)]-N-methylacetanilide or N-[p-(dimethylamino)phenyl]-N- phenylacetamide.
Palladium-Catalyzed Direct Alkynylation of C−H Bonds in Benzenes
作者:Mamoru Tobisu、Yusuke Ano、Naoto Chatani
DOI:10.1021/ol901049r
日期:2009.8.6
Palladium-catalyzed ortho-alkynylation of aromatic C−H bonds in anilides is described. Preliminary mechanistic studies reveal that electrophilic palladation is involved. Synthetic elaborations of alkynylated products are also demonstrated.
Thermolysis and radiofluorination of diaryliodonium salts derived from anilines
作者:Ethan J. Linstad、Amy L. Vāvere、Bao Hu、Jayson J. Kempinger、Scott E. Snyder、Stephen G. DiMagno
DOI:10.1039/c7ob00253j
日期:——
Aniline-derived diaryliodoniumsalts were synthesized and functionalized in good to excellent yields by judicious utilization of electron-withdrawing protecting groups. This simple approach opens another route to radiolabeling amino arenes in relatively complex molecules, such as flutemetamol.
Amide Bond Formation through Iron-Catalyzed Oxidative Amidation of Tertiary Amines with Anhydrides
作者:Yuanming Li、Lina Ma、Fan Jia、Zhiping Li
DOI:10.1021/jo400804p
日期:2013.6.7
for synthesis of tertiary amides from readily available tertiary amines and anhydrides in the presence of FeCl2 as catalyst and tert-butyl hydroperoxide in water (T-Hydro) as oxidant. Mechanistic studies indicated that the in situ-generated α-amino peroxide of tertiary amine and iminium ion act as key intermediates in this oxidative transformation.
[EN] N-((HET)ARYLMETHYL)-HETEROARYL-CARBOXAMIDES COMPOUNDS AS PLASMA KALLIKREIN INHIBITORS<br/>[FR] COMPOSÉS N-((HET)ARYLMÉTHYL)-HÉTÉROARYL-CARBOXAMIDES EN TANT QU'INHIBITEURS DE KALLIKRÉINE
申请人:KALVISTA PHARMACEUTICALS LTD
公开号:WO2016083818A1
公开(公告)日:2016-06-02
The present invention provides compounds of formula (I): (I) compositions comprising such compounds; the use of such compounds in therapy (for example in the treatment or prevention of a disease or condition in which plasma kallikrein activity is implicated); and methods of treating patients with such compounds; wherein R5, R6, R7, A, B, U, D, E, W, X, Y and Z are as defined herein.
A general and efficient method for the tertiary amide synthesis has been developed via copper-catalyzed aerobicoxidative amidation of tertiaryamines. Due to the use of O2 oxidant, various functional...