CONDENSED THIOPHENE RING-SYSTEMS .21. 5-ARYLTHIENO[3,2-C]PYRAZOLES AND ATTEMPTED PREPARATION OF 5-ARYLTHIENO[2,3-C]PYRAZOLES, RESULTING IN A NOVEL THIOPHENE TO PYRROLE TRANSFORMATION

被引:14
作者
COLBURN, VM [1 ]
IDDON, B [1 ]
SUSCHITZKY, H [1 ]
GALLAGHER, PT [1 ]
机构
[1] UNIV SALFORD,RAMAGE LABS,DEPT CHEM & APPL CHEM,SALFORD M5 4WT,LANCASHIRE,ENGLAND
来源
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1 | 1979年 / 05期
关键词
D O I
10.1039/p19790001337
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Whereas reductive cyclisation of the o-nitro-anils (1) and (2) with triethyl phosphite gave the corresponding 5-arylthieno[3,2-c]pyrazoles (6) and (7), respectively, similar treatment of the o-nitro-anils (14) and (15) gave, unexpectedly, the 1-arylpyrrole-3-carbonitriles (16) and (17), respectively, as the only isolable products. Convenient syntheses of 3-nitrothiophen-2- and 2-nitrothiophen-3-carbaldehyde are described.
引用
收藏
页码:1337 / 1340
页数:4
相关论文
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