A Practical Protocol for Three-Component, One-Pot, Stepwise Sonogashira-Heterocyclization-Heck Couplings
摘要:
A three-component, one-pot, stepwise Sonogashira-heterocyclization-Heck-coupling process was developed starting from either haloarenecarboxamides, halophenols or haloanilines, terminal alkynes and electron-deficient alkenes. Cyclic imidate-, benzofuran-, or indole-type products are obtained, respectively, in useful yields, being typically better than those obtained with isolation of the intermediate Sonogashira adducts. Very high 6-endo selectivity is maintained with imidate-type coupling products despite the presence of copper salts carried over from the Sonogashira coupling.
Copper-catalysed synthesis of 3-hydroxyisoindolin-1-ones from benzylcyanide 2-iodobenzamides
作者:Veerababurao Kavala、Chen-Yu Wang、Cheng-Chuan Wang、Prakash Bhimrao Patil、ChiaChi Fang、Chun-Wei Kuo、Ching-Fa Yao
DOI:10.1039/c9ob02329a
日期:——
An efficient one-pot two-step sequential reaction for the synthesis of biologically active 3-hydroxyisoindolin-1-one derivatives from 2-iodobenzamide derivatives and various substituted benzyl cyanides in the presence of CuCl and cesium carbonate in DMSO is reported. Furthermore, 3-hydroxyisoindolinone derivatives possessing bromo substituents were obtained from 2-iodobenzamide and 2-bromobenzyl cyanide
Synthesis of Isocoumarin Derivatives via the Copper-Catalyzed Tandem Sequential Cyclization of 2- Halo-<i>N</i>-phenyl Benzamides and Acyclic 1,3-Diketones
作者:Veerababurao Kavala、Cheng-Chuan Wang、Deepak Kumar Barange、Chun-Wei Kuo、Po-Min Lei、Ching-Fa Yao
DOI:10.1021/jo300501j
日期:2012.6.1
A facile and rapid synthesis of isocoumarin derivatives using a copper-catalyzed tandem C–C/C–O coupling strategy from readily available substrates is described. The reactions of a wide range of 2-iodo-N-phenyl benzamides and acyclic diketones as starting materials were investigated.
Synthesis of 2,3-Disubstituted Quinazolinone Derivatives through Copper Catalyzed C-H Amidation Reactions
作者:Trimurtulu Kotipalli、Veerababurao Kavala、Donala Janreddy、Vijayalakshmi Bandi、Chun-Wei Kuo、Ching-Fa Yao
DOI:10.1002/ejoc.201501552
日期:2016.2
The synthesis of quinazolinone derivatives was achieved from 2-iodobenzamide derivatives and various benzylamines, allylamine, and cinnamylamine derivatives through a one-pot copper-catalyzed reaction. In this reaction, the amine component (benzylamine/allylamine/cinnamylamine) is N-arylated with 2-iodobenzamide derivatives through Ullman coupling, followed by an intramolecular C–H amidation in the
New synthetic methods were developed for the preparation of 2,3,6-trisubstituted 1-oxo-1,2-dihydroisoquinolines as CRTh2 antagonists. The isoquinolinone core could be constructed before the introduction of substitution groups or synthesized through a catalytic intramolecular cyclization reaction with desired substitution groups properly installed. These synthetic strategies have helped to accelerate
[EN] HETEROCYCLIC COMPOUNDS, AND THEIR USE AS ALLOSTERIC MODULATORS OF 5-HYDROXYTRYPTAMINE 2C RECEPTOR (5-HT2CR)<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES ET LEUR UTILISATION EN TANT QUE MODULATEURS ALLOSTÉRIQUES DU RÉCEPTEUR DE LA 5-HYDROXYTRYPTAMINE 2C (5-HT2CR)
申请人:DR REDDYS INST OF LIFE SCIENCES
公开号:WO2021028935A1
公开(公告)日:2021-02-18
The present invention relates to compounds of formula (I): or a pharmaceutically acceptable salt or a stereoisomer thereof, wherein R1, R2, R3, R4, X, m and n are as defined in the specification. The present invention also relates to compositions comprising such compounds, use of such compounds and methods of treating a condition, disease or disorder using such compounds and/or compositions.