Water → HCID 18999839, compound

Participants

Reaction Steps

To a mixture of 0.36 g of 1-(2-acetoxyethyl)-7-(3-fluoro-4-methoxyphenyl)-1H-pyrazolo[3,4-g]quinoxaline in 50 ml of THF:MeOH:H2O (3:1:1) is added 0.39 g of LiOH:H2O and the resulting mixture is stirred at room temperature overnight. The MeOH and THF are removed in vacuo and the yellow crystalline solid precipitates out from the aqueous solution. More water is added to the mixture and cooled in an ice-bath for 1/2 hour. The product is collected by filtration, washed with water and air dried. The product is recrystallized from ethylacetate, collected and air dried to obtain 1-[2-hydroxyethyl]-7-(3-fluoro-4-methoxyphenyl)-1H-pyrazolo[3,4-g]quinoxaline (m.p. 192°-195° C.).

Provenance & Evidence