Reacción #61413

Ecuación de reacción

4-[(4-ethylthiophenyl)methyl]-3-(β-D-glucopyranosyloxy)-5-methyl-1H-pyrazole

acetic acid

acetic anhydride

→

1-acetyl-4-[(4-ethylthiophenyl)methyl]-3-(β-D-glucopyranosyloxy)-5-methylpyrazole

Disolventes

tetra-hydrofuran

Condiciones de reacción

Tratamiento posterior

1. 1
   ConcentraciónThe reaction mixture was concentrated under reduced pressure, and diethyl ether
2. 2
   workup.ADDITIONwas added to the residue
3. 3
   OtroThe resulting precipitated crystal
4. 4
   Filtraciónwas collected by filtration

Procedimiento

To a solution of 4-[(4-ethylthiophenyl)methyl]-3-(β-D-glucopyranosyloxy)-5-methyl-1H-pyrazole (0.41 g) in tetra-hydrofuran (10 mL) were added acetic acid (0.11 mL) and acetic anhydride (0.18 mL), and the mixture was stirred at room temperature overnight. The reaction mixture was concentrated under reduced pressure, and diethyl ether was added to the residue. The resulting precipitated crystal was collected by filtration to give 1-acetyl-4-[(4-ethylthiophenyl)methyl]-3-(β-D-glucopyranosyloxy)-5-methylpyrazole (0.36 g).

Fuente