Photochemical synthesis of 6-substituted 12-oxo-6,12-dihydroazepino[2,1-b]quinazolines
作者:Andrei V. Budruev、Daria Yu. Dzhons、Vladimir I. Faerman、Georgy K. Fukin、Andrey S. Shavyrin
DOI:10.1007/s10593-016-1951-2
日期:2016.9
A method for the synthesis of 6-substituted 12-oxo-6,12-dihydroazepino[2,1-b]quinazolines via a photoinitiated reaction of orthosubstituted arylazides with sodium 2-aminobenzoate is proposed. Stepwise annulation of the quinazoline system to the azepine ring occurs during nucleophilic addition of an amine to a cyclic keteneimine generated by photolysis of an arylazide and subsequent intramolecular
提出了一种通过邻位取代的芳基叠氮化物与2-氨基苯甲酸钠的光引发反应合成6-取代的12-氧代-6,12-二氢氮杂环庚烷[2,1- b ]喹唑啉的方法。在将胺亲核加成至芳族叠氮化物的环状烯酮亚胺的亲核加成过程中,将喹唑啉系统逐步环氧化成氮杂环戊烷,该芳基叠氮化物的光解反应会产生中间体分子间缩合反应。