Functionalized Carbodiimide Mediated Synthesis of 2,3-Disubstituted Quinazolin-4(3H)-ones via the Tandem Strategy of C-Nucleophilic Addition and Intramolecular NH-Substitution Cyclization
作者:Takao Saito、Hayato Nakano、Noriki Kutsumura
DOI:10.1055/s-0032-1316773
日期:——
moiety at the proximal ester group. A facile synthesis of quinazolin-4(3H)-ones possessing carbon substituents at positions 2 and 3 has been developed. Key to the synthesis is a tandem strategy involving introduction of a 2-substituent and construction of the quinazolinone framework via C-nucleophilic addition to the carbodiimide cumulenic carbon followed by intramolecular nucleophilic substitution by
摘要 已经开发了一种容易合成的在位置2和3具有碳取代基的喹唑啉4(3 H)-的方法。合成的关键是串联策略,包括引入2-取代基并通过C-亲核加成到碳二亚胺积碳中,然后通过近端酯基上新形成的NH部分进行分子内亲核取代,来构建喹唑啉酮骨架。 已经开发了一种容易合成的在位置2和3具有碳取代基的喹唑啉4(3 H)-的方法。合成的关键是串联策略,包括引入2-取代基并通过C-亲核加成到碳二亚胺积碳中,然后通过近端酯基上新形成的NH部分进行分子内亲核取代,来构建喹唑啉酮骨架。