p-Toluenesulfonic acid → 1,6-Hexanediol monomethyl ether acrylate

HRID 2352410

Reaktionsgleichung

Reaktionsgleichung von HRID 2352410
COC.[CH3:4][O:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11]O.[C:13]([OH:17])(=[O:16])[CH:14]=[CH2:15].C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1.O>[C:13]([O:17][CH2:11][CH2:10][CH2:9][CH2:8][CH2:7][CH2:6][O:5][CH3:4])(=[O:16])[CH:14]=[CH2:15]

Komponenten

7

Edukt 4

HCID 6101p-Toluenesulfonic acidHCID 6581Acrylic AcidHCID 8254Dimethyl EtherHCID 126516996-Methoxyhexan-1-ol

Produkt 1

HCID 146930481,6-Hexanediol monomethyl ether acrylate

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 1140TolueneLösungsmittel

Versuchsvorschrift

803.6 grams of the monomethyl ether described in Part (A) above were azeotropically esterified with 629.8 grams acrylic acid in 254.6 grams toluene in the presence of 24 grams p-toluenesulfonic acid and inhibitors until no more water was collected. Conditions were 95°-98° C., nitrogen sparge in vacuo. On completion, the product was washed and neutralized with sodium carbonate. 900 ppm p-methoxyphenol (MEHQ) was added and the solvent removed at 80° C. with maximum vacuum in the presence of an air sparge. Filter aid was added and the product filtered at 60° C. to give a clear, yellow liquid having a viscosity of 6.5 cps and a Gardener color 3. Equipment used was a 2 liter flask, thermometer, Dean-Stark condenser and sparge tube.

Aufarbeitung

  1. customwas collected
  2. customwere 95°-98° C.
  3. customnitrogen sparge in vacuo
  4. washOn completion, the product was washed
  5. addition900 ppm p-methoxyphenol (MEHQ) was added
  6. customthe solvent removed at 80° C. with maximum vacuum in the presence of an air
  7. customsparge
  8. filtrationFilter aid
  9. additionwas added
  10. filtrationthe product filtered at 60° C.
  11. customto give a clear, yellow liquid
  12. customthermometer, Dean-Stark condenser and sparge tube

Quellen und Nachweise

ORD-Eintrag
ord-15966b26c5924c75acfe1724b9575634
Quelldatensatz
uspto-grants-1989_10
Patentnummer
US04876384

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