Synthesis of 4-arylaminoquinazolines via 2-amino-N-arylbenzamidines
摘要:
A new synthesis of twelve 4-arylaminoquinazolines from 2-amino-N-arylbenzamidines and formic acid is described. The entering amidines were obtained in the reaction of anthranilonitrile with 50% molar excess of aromatic amines and anhydrous aluminium chloride. (C) 1998 Elsevier Science Ltd. All rights reserved.
在氯化铝存在下用苯胺处理的2-氨基苄腈分别得到2-氨基-N-芳基苯甲m。通过在甲酸中加热2-氨基-N-芳基苯甲m直接获得在2位上没有取代基的4-芳基氨基喹唑啉;在类似条件下,其他羧酸不与the反应。当用醛处理时,后者得到2-芳基-4-芳基氨基-1 H -2,3-二氢喹唑啉易于被高锰酸钾氧化成2-芳基-4-芳基氨基喹唑啉。
gave respective 2-amino-N-arylbenzamidines. 4-Arylaminoquinazolines lacking a substituent at the 2 position were obtained directly by heating 2-amino-N-arylbenzamidines in formic acid; in similar conditions other carboxylic acids did not react with the amidines. The latter when treated with aldehydes afforded 2-aryl-4-arylimino-1H-2,3-dihydroquinazolines readily oxidizable by potassium permanganate to
在氯化铝存在下用苯胺处理的2-氨基苄腈分别得到2-氨基-N-芳基苯甲m。通过在甲酸中加热2-氨基-N-芳基苯甲m直接获得在2位上没有取代基的4-芳基氨基喹唑啉;在类似条件下,其他羧酸不与the反应。当用醛处理时,后者得到2-芳基-4-芳基氨基-1 H -2,3-二氢喹唑啉易于被高锰酸钾氧化成2-芳基-4-芳基氨基喹唑啉。
Synthesis of 4-arylaminoquinazolines via 2-amino-N-arylbenzamidines
作者:Wojciech Szczepankiewicz、Jerzy Suwiński
DOI:10.1016/s0040-4039(97)10864-4
日期:1998.3
A new synthesis of twelve 4-arylaminoquinazolines from 2-amino-N-arylbenzamidines and formic acid is described. The entering amidines were obtained in the reaction of anthranilonitrile with 50% molar excess of aromatic amines and anhydrous aluminium chloride. (C) 1998 Elsevier Science Ltd. All rights reserved.