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Chemical Structure| 27132-23-6 Chemical Structure| 27132-23-6

Structure of 27132-23-6

Chemical Structure| 27132-23-6

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Product Details of [ 27132-23-6 ]

CAS No. :27132-23-6
Formula : C9H16O4
M.W : 188.22
SMILES Code : O=C(OC)C(CC)(CC)C(OC)=O
MDL No. :MFCD00008444

Safety of [ 27132-23-6 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H227-H302
Precautionary Statements:P210-P280-P370+P378-P403+P235-P501

Application In Synthesis of [ 27132-23-6 ]

* 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 [ 27132-23-6 ]

[ 27132-23-6 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 1003-09-4 ]
  • [ 31161-46-3 ]
  • [ 27132-23-6 ]
  • [ 98-88-4 ]
  • sodium methyl diethylmalonate [ No CAS ]
YieldReaction ConditionsOperation in experiment
With aluminium trichloride; In N-methyl-acetamide; methylene chloride,between; EXAMPLE 1 Preparation of the 5-benzoyl-α-methyl-2-thiopheneacetic acid. 3.420 kg of benzoyl chloride are slowly added to a suspension of 3.250 kg of aluminum trichloride in 12 kg of methylene chloride,between 10 and 20 C. At the end the mixture is stirred for 10 minutes and then 3.600 kg of 2-bromothiophene are slowly added between 0 and 5 C. The mixture is stirred for 1 hour at 15 C and then it is poured into a mixture of ice, water and hydrogen chloride. The organic phase is separated and dry concentrated and the residual product is crystallized from sec-butanol and dried. 5.500 kg of 5-benzoyl-2-bromothiophene with m.p. 73-75 C and HPLC purity > 99% are obtained. Yield equal to 92.7%. 260 of methyl diethylmalonate are slowly added, maintaining the temperature between 10 and 20 C, to a suspension of 54 g of sodium hydride at 60% in 600 g of dimethylformamide. At the end the mixture is stirred for 2 hours at 20 C in order to complete the formation of the sodium methyl diethylmalonate.
 

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