The paper describes the cyclization reactions of substituted 1-(4'-quinazolyl)-4-phenylthiosemicarbazides (Ia - Ie). The thermal intramolecular cyclization gives 2H-1,2,4-triazolo[4,3-c]quinazoline-3-thiones (IIa - IId). Heating of I with HgO gives 3-anilino-1,2,4-triazolo[4,3-c]quinazolines (IIIa - IIIe). The IR and 1H NMR spectra of the compounds synthesized are presented.
这篇论文描述了取代的1-(4'-
喹唑啉基)-4-苯基
硫脲类化合物(Ia-Ie)的环化反应。热内环化反应得到2H-
1,2,4-三唑并[4,3-c]
喹唑啉-3-
硫酮(IIa-IId)。将I与HgO加热得到3-
苯胺基-
1,2,4-三唑并[4,3-c]
喹唑啉(IIIa-IIIe)。文中给出了合成化合物的红外光谱和1H NMR光谱。