Palladium-Catalyzed Decarboxylative <i>ortho</i>-Amidation of Indole-3-carboxylic Acids with Isothiocyanates Using Carboxyl as a Deciduous Directing Group
作者:R. N. Prasad Tulichala、Mallepalli Shankar、K. C. Kumara Swamy
DOI:10.1021/acs.joc.8b00042
日期:2018.4.20
demonstrated for several other heterocyclic carboxylicacids like chromene-3-carboxylic acid, imidazo[1,2-a]pyridine-2-carboxylic acid, benzofuran-2-carboxylic acid, pyrrole-2-carboxylic acid, and thiophene-2-carboxylic acid. In the reaction using 2-naphthoic acid, of the two possible isomers, only one isomer of the amide was exclusively formed. The indole-2-amide product underwent palladium-catalyzed C–H
[EN] SUBSTITUTED 2-ACYLAMINO-CYCLOAKYLTHIOPHENE-3-CARBOXYLIC ACID ARYLAMIDES AS INHIBITORS OF CALCIUM-ACTIVATED CHLORIDE CHANNEL TMEM16A<br/>[FR] ARYLAMIDES D'ACIDE 2-ACYLAMINO-CYCLOAKYLTHIOPHÈNE-3-CARBOXYLIQUE SUBSTITUÉS EN TANT QU'INHIBITEURS DU CANAL CHLORURE ACTIVÉ PAR LE CALCIUM TMEM16A
申请人:UNIV CALIFORNIA
公开号:WO2018195127A1
公开(公告)日:2018-10-25
Provided herein are inhibitors of transmembrane protein 16A (TMEM 16A), a Ca2+-activated CI" channel expressed widely in mammalian epithelia, as well as in vascular smooth muscle and some tumors and electrically excitable cells. TMEM16A inhibitors have potential utility for treatment or management of disorders of epithelial fluid and mucus secretion, hypertension, some cancers, pain, and other diseases.
Organo-cyanamides: convenient reagents for catalytic amidation of carboxylic acids
作者:Li-Jing Li、Zhong-Qiang Zhou、Zi-Kui Liu、Yuan-Yuan He、Feng-Cheng Jia、Xiao-Qiang Hu
DOI:10.1039/d2cc05826j
日期:——
An unprecedented DMAP-catalysed amidation of aryl and alkyl carboxylicacids with organo-cyanamides has been developed. Unlike the use of N-cyano-N-phenyl-p-methylbenzenesulfonamide (NCTS) as an electrophilic cyanating reagent, an unusual desulfonylation/decyanation reaction model has been disclosed for the first time. Remarkable features of this reaction include readily available substrates, simple
catalyzed intramolecular dual C–Hactivation to construct indoloquinolinone derivatives under mild conditions with dioxygen as the sole oxidant. It was found that adding LA such as Sc3+ to Pd(OAc)2 sharply improved its catalytic efficiency, whereas Pd(OAc)2 alone was very sluggish. The activity improvement was attributed to the linkage of the Sc3+ cation to the Pd(II) species through a diacetate bridge that
Methyl Pyruvate Oxime as a Carbonyl Synthon: Synthesis of Ureas, Carbamates, Thiocarbamates, and Anilides
作者:Seo Yeon Kim、Hee Nam Lim
DOI:10.1021/acs.orglett.4c01007
日期:2024.5.10
strategy for the synthesis of unsymmetrical ureas, carbamates, thiocarbamates, and anilides was developed with methyl pyruvate oxime as the carbonyl synthon. The intrinsic reactivity of the reagent enabled consecutive disubstitution involving direct amidation and one-pot deoximative substitution with various nucleophiles. The utility of the method was demonstrated with the synthesis of bioactive molecules