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Chemistry
Organic Building Blocks
Chlorides
Methyl 3-chloro-5-methylthiophene-2-carboxylate
Chemistry
Organic Building Blocks
Chlorides
Esters

[ CAS No. 229343-19-5 ] {[proInfo.proName]}

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Cat. No.: {[proInfo.prAm]}
Chemical Structure| 229343-19-5
Chemical Structure| 229343-19-5
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Product Details of [ 229343-19-5 ]

CAS No. :229343-19-5 MDL No. :MFCD22200339
Formula : C7H7ClO2S Boiling Point : -
Linear Structure Formula :- InChI Key :-
M.W : 190.65 Pubchem ID :-
Synonyms :

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Application In Synthesis of [ 229343-19-5 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 229343-19-5 ]

[ 229343-19-5 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 76575-71-8 ]
  • [ 229343-19-5 ]
YieldReaction ConditionsOperation in experiment
79% Preparation of 3-Chloro-5-methyl-thiophene-2-carboxylic acid methyl ester A mixture of 3-Amino-5-methyl-thiophene-2-carboxylic acid methyl ester (5.0 g, 29.2 mmol) in 6N HCl (25 ml) was cooled to 0 C. (ice bath). A solution of sodium nitrite (2.01 g, 29.2 mmol) in water (5 ml) was added dropwise and the mixture was stirred at 0 C. for 60 min This mixture was then added to a solution of copper(I)chloride (2.89 g, 29.2 mmol) in conc. HCl (25 ml) at 0 C. The reaction mixture was stirred at room temperature then warmed to 65 C. until gas evolution had ceased. The reaction mixture was diluted with water and extracted with EtOAc (2*150 mL), washed with water, brine, dried over sodium sulfate, filtered and evaporated. The residue was purified by column (0-30% EtOAc in hexane) to give 4.4 g (79%) yellow oil product.
Reference： [1]Patent: US2012/238569,2012,A1 .Location in patent: Page/Page column 41
[2]Bioorganic and Medicinal Chemistry,2007,vol. 15,p. 2127 - 2146

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