作者:Jean-Pierre Hanoun、Robert Faure、Jean-Pierre Galy、José Elguero
DOI:10.1002/jhet.5570330337
日期:1996.5
have been prepared for the first time. The azido/tetrazole equilibria of the most soluble compound 4 has been studied in six solvents. The resulting tautomeric equilibrium constants have been compared with those of 2-azido-4,5-dimethylthiazole 1 and 2-azidobenzothiazole 2. The rather insoluble NH derivative 3 when dissolved in DMSO contains 66% of tetrazole 3b while the corresponding anion (obtained
首次制备了化合物2-叠氮基-6 H-噻唑并[5,4- a ] ac啶酮11-one 3和2-叠氮基-6-丁基噻唑并[5,4 - a ] acridin-11-one 4。已经在六种溶剂中研究了最易溶化合物4的叠氮基/四唑平衡。已将所得的互变异构平衡常数与2-叠氮基-4,5-二甲基噻唑1和2-叠氮基苯并噻唑2比较。当溶于DMSO中时,难溶的NH衍生物3含有66%的四唑3b,而相应的阴离子(通过添加氢化钠获得)全部存在于四唑13b中 形式。