5-氨基-3-苯基吡唑(I)和5-氨基-4-溴-3-苯基吡唑(II)与乙酰乙酸乙酯和乙酰丙酮反应,生成各种吡唑并[1,5 - a ]嘧啶IV-VI和苯偶姻给出不同的稠合吡唑,即咪唑并[1,2- b ]吡唑IX,吡咯并[2,3- c ]吡唑X和吡唑并[4,3- b ] [1,4]恶嗪XII。重氮化的II与活性的含亚甲基的腈偶联,得到吡唑并[5,1- c ]-,作为-三嗪XIV。
Pyrimidine Derivatives and Related Compounds, XI: Synthesis of some new Mercaptopyrazolo[1,5-a]pyrimidines and Mercaptopyrazolo[1,5-c]-as-triazines
作者:Mohamed R. H. Elmoghayar、Mohamed K. A. Ibrahim、Ibrahim El-Sakka、Ahmed H. H. Elghandour、Mohamed H. Elnagdi
DOI:10.1002/ardp.19833160810
日期:——
Several new substituted pyrazolo[1,5‐c]‐as‐triazines and pyrazolo[1,5‐a]pyrimidines were synthesised using 5‐amino‐4‐mercapto‐3‐phenylpyrazole and 5‐amino‐4‐bromo‐3‐phenylpyrazole as starting materials.