3-Aryl(heteryl)-4-formylpyrazoles by condensation with malonic acid furnish 3-[3-aryl(heteryl)pyrazol-4-yl]propenoic acids that in the presence of Raney nickel are reduced by hydrazine hydrate to 3-[3-aryl(heteryl)pyrazol-4-yl]propanoic acids. The successive conversion of both type acids into the corresponding acyl chlorides, esters, and amides was performed.
Microwave‐Assisted Synthesis of 3‐(4‐Pyrazolyl)propenoic Acids
摘要:
Under microwave activation, pyrazole-4-carboxaldehydes react with malonic acid in the presence of a small amount of pyridine to give 3-(4-pyrazolyl)propenoic acids in high yields.
Microwave‐Assisted Synthesis of 3‐(4‐Pyrazolyl)propenoic Acids
作者:Vitaliy O. Chornous、Mykhaylo K. Bratenko、Mykhaylo V. Vovk
DOI:10.1081/scc-120027241
日期:2004.12.31
Under microwave activation, pyrazole-4-carboxaldehydes react with malonic acid in the presence of a small amount of pyridine to give 3-(4-pyrazolyl)propenoic acids in high yields.
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作者:M. K. Bratenko、V. A. Chornous、M. V. Vovk
DOI:10.1023/a:1020905727368
日期:——
3-Aryl(heteryl)-4-formylpyrazoles by condensation with malonic acid furnish 3-[3-aryl(heteryl)pyrazol-4-yl]propenoic acids that in the presence of Raney nickel are reduced by hydrazine hydrate to 3-[3-aryl(heteryl)pyrazol-4-yl]propanoic acids. The successive conversion of both type acids into the corresponding acyl chlorides, esters, and amides was performed.