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Chemical Structure| 771-03-9 Chemical Structure| 771-03-9

Structure of 771-03-9

Chemical Structure| 771-03-9

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Product Details of [ 771-03-9 ]

CAS No. :771-03-9
Formula : C8H8O4
M.W : 168.15
SMILES Code : O=C1C(C(C)=O)=C(O)C=C(C)O1
MDL No. :MFCD00006634
InChI Key :PKLPQOJFHFGVBS-UHFFFAOYSA-N
Pubchem ID :54678494

Safety of [ 771-03-9 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302
Precautionary Statements:P261-P280-P305+P351+P338-P304+P340

Application In Synthesis of [ 771-03-9 ]

* 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 [ 771-03-9 ]

[ 771-03-9 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 83279-39-4 ]
  • [ 771-03-9 ]
  • 4-hydroxy-3-[3-[3-chloro-4-(trifluoromethoxy)phenyl]-1-oxo-2-propenyl]-6-methyl-2H-pyran-2-one [ No CAS ]
YieldReaction ConditionsOperation in experiment
With piperidine; In chloroform; for 4.0h;Heating / reflux; Example 1; Synthesis of the present intermediate (II-2a) [Compound No. (1a-6)]; A mixture of 1.85 g of 3-acetyl-4-hydroxy-6-methyl-2H-pyran-2-one, 2.25 g of <strong>[83279-39-4]3-chloro-4-(trifluoromethoxy)benzaldehyde</strong>, 20 ml of chloroform and 0.7 ml of piperidine was heated under refluxing for 4 hours. After cooling to room temperature, the reaction mixture was concentrated under reduced pressure, and the residue was subjected to column chromatography. Resulting crystals were washed with 40 ml of t-butyl methyl ether to obtain 0.40 g of 4-hydroxy-3-[3-[3-chloro-4-(trifluoromethoxy)phenyl]-1-oxo-2-propenyl]-6-methyl-2H-pyran-2-one [Compound No. (1a-6]) as a yellow crystal.
 

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