Reactions of Hydrazonoyl Halides 35 1 : Synthesis of Some New 1,2,4-Triazolino[4,3-a]pyrimidines, 2,3-Dihydro-1,3,4-thiadiazoles and 2,3-Dihydro-1,3,4-selenadiazoles
作者:Nora M. Rateb、Nadia A. Abdel-Riheem、Ali A. Al-Atoom、Abdou O. Abdelhamid
DOI:10.1080/10426500307853
日期:2003.5.1
Hydrazonoyl halides have been caused to react with each of ethyl 4-(2 H -benzo[3,4- d ]1,3-dioxolen-5-yl)-6-methyl-2-methylthio-3,4-dihydropyrimidin-5-carboxylate, potassium thiocyanate (or thiourea), potassium selenocyanate, and alkyl carbodithioate in the presence of triethylamine to give 4,3-dihydro-1,2,4-triazolino[4,3- a ]pyrimidine, 1,3,4-thiadiazoline, 1,2,4-selenadiazoline, and unsymmetrical
已使腙
酰卤与 4-(2 H-苯并[3,4-d]
1,3-二氧戊环-5-基)-6-甲基-2-甲
硫基-3,4-二氢
嘧啶- 5-
羧酸盐、
硫氰酸钾(或
硫脲)、
硒氰酸钾和碳二
硫代烷基酯在
三乙胺存在下得到4,3-二氢-
1,2,4-三唑并[4,3-a]
嘧啶,1,3, 4-
噻二唑啉、1,2,4-
硒二唑啉和不对称吖嗪衍
生物,收率良好。新化合物的结构是在元素分析、光谱数据和其他可能的合成方法的基础上阐明的。