Methanol → Methyl 3-(2-hydroxyphenyl)prop-2-enoate

HRID 1731770Notes

Reaction equation

HRID 1731770 reaction equation
[OH:1][C:2]1[CH:12]=[CH:11][CH:10]=[CH:9][C:3]=1[CH:4]=[CH:5][C:6]([OH:8])=[O:7].[CH3:13]O>S(=O)(=O)(O)O>[OH:1][C:2]1[CH:12]=[CH:11][CH:10]=[CH:9][C:3]=1[CH:4]=[CH:5][C:6]([O:8][CH3:13])=[O:7]

Participants

4

Reactant 2

HCID 887MethanolHCID 119683-(2-Hydroxyphenyl)-2-propenoic acid

Product 1

HCID 89400Methyl 3-(2-hydroxyphenyl)prop-2-enoateYield 92%

Reagents, catalysts & solvents 1

HCID 1118Sulfuric AcidCatalyst

Procedure

A solution of 200 g (1.218 mole) of 2-hydroxycinnamic acid in 2 L of anhydrous methanol was treated with 10 drops of concentrated sulfuric acid. This solution was refluxed for 72 hr., using a Soxhlet extractor charged with 200 g of 3 A molecular sieves. The methanolic solution was then concentrated under reduced pressure and cooled to afford 200 g (92%) of white crystals, which were used directly in the next step without additional purification.

Workup

  1. temperatureThis solution was refluxed for 72 hr
  2. concentrationThe methanolic solution was then concentrated under reduced pressure
  3. temperaturecooled

Sources & evidence

ORD record
ord-9f04a10b32004acf8b78a911242faf22
Source dataset
uspto-grants-1986_11
Patent number
US04623652

Reaction notes

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