|
Production Methods |
Chemical synthesis methods for 5-Chlorothiophene-2-carboxylic acid involve reactions starting from appropriate precursors, such as oxalyl chloride and thiosemicarbazide. |
|
Analysis Method |
Analytical techniques such as FT-IR spectroscopy, FT-Raman spectroscopy, NMR spectroscopy, and mass spectrometry are used for characterization and analysis of 5-Chlorothiophene-2-carboxylic acid and its derivatives. |
InChI:InChI=1/C5H3ClO2S/c6-4-2-1-3(9-4)5(7)8/h1-2H,(H,7,8)/p-1
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The invention discloses a method for syn...
The present invention relates to bumetan...
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2-thiophenylcarboxylic acid
2,5-diclorothiophene
5-Chlorothiophene-2-carboxylic acid
| Conditions | Yield |
|---|---|
|
With
alkaline aqueous sodium hypochlorite solution;
anschliessend Erwaermen mit wss. Salzsaeure;
|
2-acetyl-5-chlorothiophene
5-Chlorothiophene-2-carboxylic acid
| Conditions | Yield |
|---|---|
|
With
sodium chlorite; potassium dihydrogenphosphate;
In
water; acetone;
at 0 - 30 ℃;
for 22h;
|
84.9% |
|
With
bromine; sodium hydroxide;
In
1,4-dioxane; water;
at 0 - 20 ℃;
|
76.1% |
|
With
sodium hydroxide; potassium permanganate; water;
|
|
|
With
alkaline aqueous sodium hypochlorite solution;
|
|
|
With
1,4-dioxane; alkaline aqueous sodium hypobromite solution;
|
|
|
With
sodium hydroxide; chlorine;
Yield given. Multistep reaction;
1) H2O, -10 deg C, 2) 50 deg C;
|
2-thienyl chloride
diethyl ether
2,5-diclorothiophene
2-thiophenylcarboxylic acid
methyl 5-chloro-2-thiophenecarboxylate
ethyl 5‐chlorothiophene‐2‐carboxylate
5-chlorothiophene-2-carbonyl chloride
(5-chloro-thiophen-2-yl)-[4-(4-nitro-phenyl)-piperazin-1-yl]-methanone
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