PYRIDAZINES .54. ON THE SYNTHESIS OF PYRIDAZINE-FUSED S-HETEROCYCLES - THIENO[2,3-C]PYRIDAZINE, PYRIMIDO[4',5'-4,5]THIENO[2,3-C]PYRIDAZINE, AND PYRIDAZINO[3,4-B][1,4]BENZOTHIAZINE

被引：10

作者：

CZECH, K ^{[1
]}

HAIDER, N ^{[1
]}

HEINISCH, G ^{[1
]}

机构：

[1] UNIV VIENNA,INST PHARMACEUT CHEM,A-1090 VIENNA,AUSTRIA

来源：

MONATSHEFTE FUR CHEMIE | 1991年 / 122卷 / 05期

关键词：

3-CHLORO-4-PYRIDAZINECARBONITRILE; REACTIONS WITH S-NUCLEOPHILES; PYRIDAZINO[3,4-B]-[1,4]BENZOTHIAZINE; PYRIMIDO[4',5'-4,5]THIENO[2,3-C]PYRIDAZINE; THIENO[2,3-C]PYRIDAZINE DERIVATIVES;

D O I：

10.1007/BF00809662

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Starting from 3-chloro-4-pyridazinecarbonitrile (1), the thienopyridazine derivatives 2 and 3 were prepared. Condensation of 3 with triethyl orthoformate afforded the novel tricyclic system 4. Reaction of 1 with 2-aminothiophenol, followed by treatment with NaH/DMSO was found to give the diaza-phenothiazine 6 instead of the expected condensed thiazepine.

引用

页码：413 / 418

页数：6

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