Tetrazolo[1,5-a]quinolines and 1,2,3-Triazolo[1,5-a]quinazolines by the Action of Cyanocarbanions on 2-azidoarylcarbonyl Compounds
作者:Thomas C. Porter、Robert K. Smalley、Mabrouk Teguiche、Bambang Purwono
DOI:10.1055/s-1997-1416
日期:1997.7
In protic solvents, 2-azidobenzaldehyde undergoes base-catalysed condensation with cyanocarbanions to yield tetrazolo[1,5-a]quinolines 5a-g, whereas in aprotic media 1,2,3-triazolo[1,5-a]quinazolines 6a-f are formed. Triazoloquinazolines 9a-g are also obtained from 2'-azidoacetophenone and from 2-azidobenzonitrile, whereas with 2-azidobenzoyl chloride hydroxytetrazoloquinolines 13a,b result. 2,1-Oxazolo[4,3-c]tetrazolo[1,5-a]quinolines 20a,b are obtained by the action of selected cyanocarbanions on 2-azidobenzonitrile oxide 15 and a 1,2,3-triazolo[1,5-a]quinoline 22 by base-catalysed condensation of 2-azidobenzonitrile with 1,3-diphenylpropan-2-one.
在质子溶剂中,2-叠氮苯甲醛与氰基碳阴离子在碱催化下发生缩合反应,生成四唑[1,5-a]喹啉5a-g,而在非质子介质中则形成1,2,3-三唑[1,5-a]喹唑啉6a-f。三唑喹唑啉9a-g也可以通过2'-叠氮苯乙酮和2-叠氮苯腈得到,而与2-叠氮苯甲酰氯反应则产生氢氧四唑喹啉13a,b。2,1-噁唑[4,3-c]四唑[1,5-a]喹啉20a,b是通过特定的氰基碳阴离子与2-叠氮苯腈氧化物15反应获得的,而1,2,3-三唑[1,5-a]喹啉22则是通过2-叠氮苯腈与1,3-二苯基丙酮的碱催化缩合反应生成的。