ChemicalBook CAS DataBase List 3-(Thiophen-2-yl)-1H-pyrazole-5-carboxaMide ,97%

3-(Thiophen-2-yl)-1H-pyrazole-5-carboxaMide ,97% synthesis

2synthesis methods

Product Name:3-(Thiophen-2-yl)-1H-pyrazole-5-carboxaMide ,97%
CAS Number:1240279-47-3
Molecular formula:C8H7N3OS
Molecular Weight:193.23

Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate

121195-03-7
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3-(Thiophen-2-yl)-1H-pyrazole-5-carboxaMide ,97%

1240279-47-3
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Yield:1240279-47-3 87%

Reaction Conditions:

Stage #1: ethyl-5-(2-thienyl)-1H-pyrazole-3-carboxylatewith ammonia in ethanol;water at 20; for 168 h;
Stage #2: in ethanol;water; for 5 h;Reflux;

References:

Musatov;Starodubtseva;Rakishev;Turova;Vinogradov [Russian Journal of Organic Chemistry,2011,vol. 47,# 8,p. 1199 - 1203] Location in patent:experimental part

88-15-3
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1240279-47-3
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References

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