2,3-Disubstituted pyrrolo[2,3-b]quinoxalines via aminopalladation–reductive elimination
摘要:
2,3-Disubstituted pyrrolo[2,3-b]quinoxalines have been prepared in good to high yield through the reaction of 2-alkynyl-3-trifluoroacetamidoquinoxalines with aryl and vinyl halides or triflates in the presence of Pd(PPh3)(4) and K2CO3 in MeCN at 100 degreesC. (C) 2004 Elsevier Ltd. All rights reserved.
[EN] AMINO-QUINOXALINE AND AMINO-QUINOLINE COMPOUNDS FOR USE AS ADENOSINE A2a RECEPTOR ANTAGONISTS [FR] AMINO-QUINOXALINE ET COMPOSÉS AMINO-QUINOLINE À UTILISER EN TANT QU'ANTAGONISTES DU RÉCEPTEUR A2a
2-Aryl and 2-Heteroaryl Pyrrolo[2,3-<i>b</i>]quinoxalines via Copper-Catalyzed Reaction of 1-Alkynes with 2-Bromo-3-trifluoroacetamidoquinoxaline
作者:Sandro Cacchi、Giancarlo Fabrizi、Luca M. Parisi、Roberta Bernini
DOI:10.1055/s-2003-45004
日期:——
2-Aryl and 2-heteroaryl pyrrolo[2,3-b]quinoxalines have been prepared in good to high yield through the reaction of 1-alkynes with 2-bromo-3-trifluoroacetamidoquinoxaline in the presence of catalytic amounts of CuI, PPh3, and K2CO3 in dioxane at 110 °C. The reaction appears to tolerate a wide range of functionalized 1-alkynes, including those containing ether, alcohol, amide, aldehyde, ketone, ester, and nitro groups.
Indolizino[5,6‐b]quinoxalinederivatives (1 a and 1 b) with a push–pull structure were prepared to show intramolecularcharge‐transfer properties. Compounds 1 a and 1 b are strongly fluorescent in aprotic solvents while symmetrical derivatives (2 a and 2 b) were non‐fluorescent. The π‐expanded α–α linked dimer (10) of indolizino[5,6‐b]quinoxaline 1 b was serendipitously obtained to show NIR absorption
具有推挽结构的Indolizino [5,6- b ]喹喔啉衍生物(1a和1b)具有分子内电荷转移特性。化合物1和图1b是在非质子溶剂,而对称的衍生物(强荧光2和图2b)是非荧光的。偶然获得了吲哚并[5,6- b ]喹喔啉1b的π扩展α-α连接的二聚体(10),在800 nm处显示出近红外吸收,荧光边缘达到了1400 nm。
AMINO-QUINOXALINE AND AMINO-QUINOLINE COMPOUNDS FOR USE AS ADENOSINE A2a RECEPTOR ANTAGONISTS
申请人:Harris Joel M.
公开号:US20110105513A1
公开(公告)日:2011-05-05
Compounds of the Formula (I), where W represents CH or N; and Q represents —CN, —C(═NOH)NH
2
, —CONHR
1
or various herein described heterocyclic radicals; as well as pharmaceutically acceptable salts, solvates, esters and prodrugs thereof. Care adenosine A
2a
receptor antagonists and, therefore, are useful in the treatment of central nervous system diseases, in particular Parkinson's disease.
[EN] FUSED TRICYCLIC COMPOUNDS AS RIP1-KINASE INHIBITORS AND USES THEREOF<br/>[FR] COMPOSÉS TRICYCLIQUES FUSIONNÉS EN TANT QU'INHIBITEURS DE RIP1-KINASE ET LEURS UTILISATIONS
申请人:ZAI LAB US LLC
公开号:WO2022171110A1
公开(公告)日:2022-08-18
A compound of formula I below as RIP1 kinase inhibitor and uses thereof.