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Chemical Structure| 160417-31-2 Chemical Structure| 160417-31-2

Structure of 160417-31-2

Chemical Structure| 160417-31-2

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Product Details of [ 160417-31-2 ]

CAS No. :160417-31-2
Formula : C16H16O2
M.W : 240.30
SMILES Code : O=C(C1=CC(C2=CC=C(C)C=C2)=CC=C1)OCC

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Application In Synthesis of [ 160417-31-2 ]

* 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 [ 160417-31-2 ]

[ 160417-31-2 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 160417-31-2 ]
  • [ 147404-69-1 ]
YieldReaction ConditionsOperation in experiment
75% With lithium hydroxide; In tetrahydrofuran; methanol; water; at 20.0℃; Ethyl 3-bromobenzoate (2.43 g) was mixed with p-methylphenylboronic acid (1.50 g), 2.12 g of sodium carbonate, 2.31 g of tetrakis(triphenylphosphine)palladium and 30 mL of water were added, and the mixture was stirred at reflux under nitrogen and stirred overnight. After cooling, the solution was evaporated by evaporation and the mixture was separated on a silica gel column (isolation system: petroleum ether:ethyl acetate = 10:1 to 5:1) to obtain 1.61 g of a coupling product in a yield of 71%. 2.26 g of the product in the previous step was added to a mixed solution of 20 mL of tetrahydrofuran and 5 mL of methanol. 100 mL of a 20% aqueous lithium hydroxide solution was added to the solution, and the mixture was stirred at room temperature overnight. After the completion of the process, the pH is adjusted to 2 with concentrated hydrochloric acid and the solvent is distilled off. The mixture was separated on a silica gel column (isolation system: petroleum ether:ethyl acetate=10:1 to 100% ethyl acetate) to obtain 1.59 g of a hydrolyzed product with a yield of 75%. The product of the previous step was directly added with 50 mL of thionyl chloride and stirred at reflux for 2 h. Thionyl chloride was distilled off to obtain the product of the acid chloride, which was used directly in the next step. 3.46 g of the acid chloride product and 2.29 g of the intermediate compound were mixed and 50 mL of pyridine was added. 100C, stirred at reflux overnight. After cooling, the solvent was distilled off and the mixture was separated on a silica gel column (isolation system: petroleum ether:ethyl acetate=10:1 to 100% ethyl acetate) to give a crude product. The crude product was purified by preparative chromatography (mobile phase: water (0.05% aqueous ammonia)-acetonitrile; B 40%-80%, 50 minutes) to give a pale orange solid 0.85 g, yield 20%.
With sodium hydroxide; In ethanol; water; A. Preparation of (18) where R11 is 4-Methylphenyl, and R12 is Hydrogen To a solution of ethyl 4'-methylbiphenyl-3-carboxylate (4.0 g) in ethanol (50 ml) was added a solution of 10 ml of 10% aqueous sodium hydroxide, and the mixture refluxed for 2 hours. Solvent was removed under reduced pressure, water added to the residue, and the solution filtered. The filtrate was acidified with dilute hydrochloric acid, and the white solid filtered off and dried under vacuum, yielding 2.4 g of 4'-methylbiphenyl-3-carboxylic acid m.p. 192 C.
 

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