中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 5-(4-methylpiperidino)-tetrazolo[1,5-a]quinoline-4-carbonitrile | 666211-60-5 | C16H16N6 | 292.343 |
4-Alkylamino-2-chloroquinoline-3-carbonitriles 4a - c react with NaN3 to give the corresponding tetrazolo[1,5-a]quinoline-4-carbonitriles 5a - c which are converted into 2-amino-quinoline-3-carbonitriles 8a - c by reaction with PPh3 via an iminophosphorane and subsequent hydrolysis. On the other hand, the new 3,4-diamino-1H-pyrazolo[4,3-c]quinoline (11) was prepared by fusion of the aminoquinolines 8a - c with hydrazine hydrate. Diazotization of 11 followed by reaction with NaN3 yielded the novel tetracyclic ring system 3-azido-1H-1,2,4,5,6,6a-hexaazabenzo[a]indacene (13)
Reaction of 2,4-dichloroquinoline-3-carbonitrile (1) with 4-methylpiperidine gave 2-chloro-4-(4-methylpiperidin-1-yl)quinoline-3-carbonitrile (2). Acid hydrolysis of 2 afforded the corresponding 2-quinolinones 3, which were N-alkylated in DMF to form the 1-methyl, -ethyl and -phenacyl quinolinones 6a–c. Fusion of 6a–c with hydrazine hydrate gave the 3-aminopyrazolo[4,3-c]quinolin-4-ones 8a–c. Diazotisation of 8a,b followed by reaction with sodium azide afforded the novel 3-azidopyrazolo[4,3-c]quinolin-4-ones 9a,b.