Methyl Acrylate → HCID 4604295, Verbindung

Temperatur

0 °C

1.5 ml of a solution of 1N sodium hydroxide in methanol are added to a solution of 20.2 g of 2-methoxybenzenethiol in 20 ml of methanol and 20 ml of diethyl ether followed by cooling to 0° C. 13.9 ml of methylacrylate was then dropwise added to this solution. After completion of dropping, the reaction mixture was warmed to room temperature and stirred overnight. After concentrating the reaction mixture by a rotary evaporator, 8.7 g of sodium hydroxide, 100 ml of water and 35 ml of methanol was added followed by stirring vigorously overnight. The reaction mixture was acidified with concentrated hydrochloric acid while cooling and the resulting solution was extracted with chloroform. The chloroform layer was dried with magnesium sulfate, the solvent was distilled off and the resulting crystal was recrystallized from chloroform-hexane to obtain 25.4 g of the target 2-(2-methoxyphenylthio) ethanecarboxylic acid (yield: 83%, m.p.: 91°-91.5° C.).

1. temperaturethe reaction mixture was warmed to room temperature
2. concentrationAfter concentrating the reaction mixture
3. customby a rotary evaporator, 8.7 g of sodium hydroxide, 100 ml of water and 35 ml of methanol
4. additionwas added
5. stirringby stirring vigorously overnight
6. temperaturewhile cooling
7. extractionthe resulting solution was extracted with chloroform
8. dry with materialThe chloroform layer was dried with magnesium sulfate
9. distillationthe solvent was distilled off
10. customthe resulting crystal was recrystallized from chloroform-hexane

ORD-Eintrag

ord-2e35ee2944c84cb69b0a70853c7d77a5

Quelldatensatz

uspto-grants-1996_10

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05565440