Methanol → Benzoic Acid

HRID 1638762Notes

Reaction equation

HRID 1638762 reaction equation
N1C=CC=CC=1.[C:7](Cl)(=[O:14])[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1.[OH2:16].CO>CC1C=CC(C)=CC=1>[C:7]([OH:14])(=[O:16])[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1

Participants

6

Reactant 4

HCID 887MethanolHCID 962WaterHCID 1049PyridineHCID 7412Benzoyl chloride2×

Product 1

HCID 243Benzoic Acid

Reagents, catalysts & solvents 1

HCID 7809P-XyleneSolvent2×

Procedure

In a reaction vessel having a capacity of 20 l, 1100 g of the so-obtained block copolymer-containing composition was dissolved in 11 l of p-xylene in a nitrogen atmosphere at 100° C. After the composition had been completely dissolved in p-xylene, 400 ml of pyridine was added into the reaction vessel, and 800 g of benzoyl chloride was continuously supplied in the reaction system over a period of 1 hour. Then, reaction was conducted at 100° C. for 1.5 hours after completion of the addition of benzoyl chloride, and the reaction was stopped by adding 2 l of distilled water into the reaction mixture. After termination of the reaction, the temperature was lowered close to room temperature and the liquid reaction mixture was thrown into a great excess of methanol (in a mixer) to precipitate a benzoic acid-esterified polymer composition. The precipitate was recovered by filtration. After filtration, the benzoic acid-esterified polymer composition was washed with methanol repeatedly and dried under reduced pressure at 50° C. for 24 hours to obtain an intended benzoic acid-esterified polymer composition.

Workup

  1. customIn a reaction vessel having
  2. additiona capacity of 20 l, 1100 g of the so-obtained block copolymer-containing composition
  3. customThen, reaction
  4. waitwas conducted at 100° C. for 1.5 hours
  5. customAfter termination of the reaction
  6. customthe temperature was lowered close to room temperature
  7. customthe liquid reaction mixture
  8. customto precipitate a benzoic acid-
  9. filtrationThe precipitate was recovered by filtration
  10. filtrationAfter filtration
  11. washwas washed with methanol repeatedly
  12. customdried under reduced pressure at 50° C. for 24 hours

Sources & evidence

ORD record
ord-5aac88b3437f48159845792cccfaee68
Source dataset
uspto-grants-1989_11
Patent number
US04880873

Reaction notes

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