One-pot synthesis of 3-substituted-2-[(3-methyl-1H-pyrazol-5-yl)imino]-5,6-diphenyl-1,3-thiazin-4-ones
摘要:
New classes of 3N-substituted-2-[(3-methyl-1H-pyrazole-5-yl)-imino]-5,6-diphenyl-2H-1,3-thiazin-4(3H)-ones have been synthesized, via one pot reactions between pyrazolylthioureas, 2,3-diphenylcyclopro penone and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone. The structures of the products have been confirmed by different spectroscopic analyses. A rationale for the formation of the products is presented.[GRAPHICS].
Synthesis of<i>N</i>-Substituted(Thiazol-2-ylidene)pyrazol-5-amine Derivatives via Condensation of Pyrazolylthioureas with ω-Bromoacetophenones
作者:Alaa A. Hassan、Yusria R. Ibrahim、Ashraf A. Aly、Essmat M. El-Sheref、Alan B. Brown
DOI:10.1002/jhet.1793
日期:2014.5
1‐Substituted 3‐[3‐methyl‐1H‐pyrazol‐5‐yl]thioureas react with ω‐bromoacetophenones forming N‐substituted(thiazol‐2‐ylidene)pyrazol‐5‐amine derivatives. Rational for these conversations are presented.
One-pot synthesis of 3-substituted-2-[(3-methyl-1<i>H</i>-pyrazol-5-yl)imino]-5,6-diphenyl-1,3-thiazin-4-ones
作者:Essmat M. El-Sheref
DOI:10.1080/17415993.2017.1337121
日期:2017.11.2
New classes of 3N-substituted-2-[(3-methyl-1H-pyrazole-5-yl)-imino]-5,6-diphenyl-2H-1,3-thiazin-4(3H)-ones have been synthesized, via one pot reactions between pyrazolylthioureas, 2,3-diphenylcyclopro penone and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone. The structures of the products have been confirmed by different spectroscopic analyses. A rationale for the formation of the products is presented.[GRAPHICS].
Novel Synthesis of Pyrazolyloxothiazolidine Derivatives
作者:Alaa A. Hassan、Yusria R. Ibrahim、Essmat M. El-Sheref、Ashraf A. Aly、Stefan Bräse、Alan B. Brown
DOI:10.1002/jhet.1023
日期:2012.11
1‐Substituted 3‐[3‐(methyl/phenyl)‐1H‐pyrazol‐5‐yl]thioureas react with the triple bond of dimethyl acetylenedicarboxylate forming (Z)‐methyl 2‐[(Z)‐3‐substituted‐2‐(3‐(methyl/phenyl‐1H‐pyrazol‐5‐ylimino)‐4‐oxothiazolidin‐5‐ylidene)acetates. Rational for these conversations are presented.