A new strategy for the synthesis of pyrazolo[4,3-e][1,2,4]triazolo[4,3-c]pyrimidines and pyrazolo[4,3-e][1,2,4]triazolo[1,5-c]pyrimidines

被引：35
|
作者：
Shawali, Ahmad Sami [1 ]
Hassaneen, Hamdi M. [1 ]
Shurrab, Nabil Kh. [1 ]
机构：
[1] Cairo Univ, Fac Sci, Dept Chem, Giza, Egypt
来源：
TETRAHEDRON | 2008年 / 64卷 / 45期
关键词：
Hydrazones; Nitrilimines; Dimroth rearrangement; 1H-Pyrazolo[4,3-e]pyrimidine; Heterocycles;
D O I：
10.1016/j.tet.2008.08.082
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A series of pyrazolo[4,3-e][1,2,4]triazolo[4,3-c]pyrimidines were prepared via oxidative cyclization of alclehyde N-(1,3-diphenylpyrazolo[3,4-d]pyrimidin-4-yl)hydrazones. Dimroth rearrangement of such a series yielded pyrazolo[4,3-e][1,2,4]triazolo[1,5-c]pyrimidines. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：10339 / 10343
页数：5
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