[EN] PROCESS FOR THE PREPARATION OF 8-(4-AMINOPHENOXY)-4H-PYRIDO[2,3-B]PYRAZIN-3-ONE DERIVATIVES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE 8-(4-AMINOPHÉNOXY)- 4H-PYRIDO[2,3-B]PYRAZIN-3-ONE
申请人:CANCER REC TECH LTD
公开号:WO2015075482A1
公开(公告)日:2015-05-28
The present invention pertains generally to the field of organic chemical synthesis, and in particular to certain methods for the synthesis of 8-(4-aminophenyoxy)- 4H-pyrido[2,3-b]pyrazin-3-one and related compounds (denoted herein as (3)) from 4-(4-aminophenyoxy)pyridine-2,3-diamine and related compounds (denoted herein as (1)), by reaction with glyoxylic acid (denoted herein as (2)). The compounds (3) are useful in the synthesis of known anti-cancer agents, such as 1-(5-tert-butyl-2-(4-methyl- phenyl)-pyrazol-3-yl)-3-[2-fluoro-4-[(3-oxo-4H-pyrido[2,3-b]pyrazin-8-yl)oxy]phenyl]urea.
Process for the preparation of 8-(4-aminophenoxy)-4H-pyrido[2,3-b]pyrazin-3-one derivatives
申请人:CANCER RESEARCH TECHNOLOGY LIMITED
公开号:US10100053B2
公开(公告)日:2018-10-16
The present invention pertains generally to the field of organic chemical synthesis, and in particular to certain methods for the synthesis of 8-(4-aminophenyoxy)-4H-pyrido[2,3-b]pyrazin-3-one and related compounds (denoted herein as (3)) from 4-(4-aminophenyoxy)pyridine-2,3-diamine and related compounds (denoted herein as (1)), by reaction with glyoxylic acid (denoted herein as (2)). The compounds (3) are useful in the synthesis of known anti-cancer agents, such as 1-(5-tert-butyl-2-(4-methyl-phenyl)-pyrazol-3-yl)-3-[2-fluoro-4-[(3-oxo-4H-pyrido[2,3-b]pyrazin-8-yl)oxy]phenyl]urea.
Reactions of 3-([(trifluoromethyl)sulfonyl]oxy)-1H-indole derivatives with diamines and carbon nucleophiles. Synthesis of 6H-indolo[2,3-b]quinoxaline derivatives
作者:Béatrice Malapel-Andrieu、Jean-Yves Mérour
DOI:10.1016/s0040-4020(98)00650-4
日期:1998.9
Indolic triflate reacted with 1,2-diamines to afford pyrazino[2,3-b]indole or indolo[2,3-b] quinoxaline. Carbon nucleophiles such as malonate derivatives also reacted with indolic triflate in absence of palladium catalyst to afford 2-(3-oxo-2,3 -dihydro-1H-2-indolyliden) malonate derivatives. (C) 1998 Elsevier Science Ltd. All rights reserved.
Bergman, Jan; Damberg, Charlotta; Vallberg, Hans, Recueil des Travaux Chimiques des Pays-Bas, 1996, vol. 115, # 1, p. 31 - 36
作者:Bergman, Jan、Damberg, Charlotta、Vallberg, Hans
DOI:——
日期:——
PROCESS FOR THE PREPARATION OF 8-(4-AMINOPHENOXY)-4H-PYRIDO[2,3-B]PYRAZIN-3-ONE DERIVATIVES