Synthesis of polyfunctionally substituted pyrazolonaphthyridine, pentaazanaphthalene, and heptaazaphenanthrene derivatives

被引：28

作者：

Aly, A. A. ^{[1
]}

机构：

[1] Benha Univ, Fac Sci, Dept Chem, Banha, Egypt

来源：

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS | 2006年 / 181卷 / 10期

关键词：

heptaazacyclopenta[b]phenanthrene; pentaazacyclopenta[b]naphthalene; pyrazolo[3,4-b]pyridine;

D O I：

10.1080/10426500600695179

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

6-aminopyrazolo[3,4-b] pyridine-5-carbonitrile (2) was used as a precursor for the synthesis of a variety of pyrazolo[3,4-b][1,8] naphthyridines (3,4) and pentaazacyclopenta[b]naphthalenes (5-10, 13, 14) via the initial addition to either the cyano or amino group followed by cyclization. Also, a series of heptaazadicyclopenta[a, g] naphthalenes (15-17) and heptaazacyclopenta[b]phenanthrenes (18, 19) were obtained via the interaction of 4-(dibenzothiophen-2-yl)-1,5-dihydro-5- imino-3-methyl-1-phenyl-1,2,6,8,9-pentaazacyclopenta[b]naphthalen-6-ylamine (14) with different reagents. The structures of the synthesized compounds were established by elemental and spectral analyses.

引用

页码：2395 / 2409

页数：15

共 27 条

[1] Reactivity of condensed thiophenes in the Diels-Alder reaction: The reactivity of 3-aminothieno[3,4:3',4'] benzo[b]pyranone; 3-aminothieno[3,4-c]qninoline and of 5-amino-7-substituted thieno[3,4-d]pyridazinone toward electron-poor olefins and acetylenes. [J].