作者:Noritaka Abe、Keiko Tanaka、Satoshi Yamagata、Akira Satoh、Kameji Yamane
DOI:10.1246/bcsj.65.340
日期:1992.2
2-Chloro-1-azaazulene-3-carbaldehyde (1a) reacted with pyridine, followed by a reacion with piperidine to give 2-amino-1-azaazulene-3-carbaldehyde (1b) in excellent yield. Compound 1b was also obtained by a Vilsmeier–Haack reaction of 2-amino-1-azaazulene. Acetylation of 1b yielded a 2-acetylamino derivative, whereas methylation gave a 1-methylated compound. Reactions of 1b with hydrazines and alkylamines gave the corresponding hydrazones and Schiff bases, respectively, in excellent yields. The reactions of 1b with active methylene compounds gave 1,10-diazabenz[a]azulen-2(1H)-one derivatives. The reaction of 1b with guanidine gave pyrimidine-fuzed 1-azaazulene.
2-氯-1-氮杂唑烯-3-甲醛(1a)与吡啶反应,然后与哌啶再反应,得到 2-氨基-1-氮杂唑烯-3-甲醛(1b),收率极高。化合物 1b 也是通过 2-amino-1-azaazulene 的 Vilsmeier-Haack 反应得到的。1b 的乙酰化反应生成 2-乙酰氨基衍生物,而甲基化反应则生成 1-甲基化化合物。1b 与肼和烷基胺反应分别得到相应的肼和希夫碱,产量极高。1b 与活性亚甲基化合物反应可得到 1,10-二氮杂苯并[a]氮杂烯-2(1H)-酮衍生物。1b 与胍反应生成了嘧啶催化的 1-氮杂唑烯。