Sodium Hydroxide → HCID 22258012, compound

Participants

Reaction Steps

A suspension of the partially purified 3-methyl-1-(2-methylpropyl)-6-(1-naphthalenylmethyl)-5-[(3-nitrophenyl)thio]thieno[2,3-d]pyrimidine-2,4-(1H, 3H)-dione (Example 30, 1.20 g), iron powder (0.59 g) and ammonium chloride (0.56 g) in ethanol (5 ml) and water (5 ml) was heated at reflux for 2 hours, then cooled to room temperature. 2M Sodium hydroxide solution (50 ml) was added and the mixture was stirred for 30 minutes. The resulting solution was decanted from insoluble solid. The solid and solution were in turn extracted with ethyl acetate (3×50 ml). The combined organic extracts were dried over anhydrous magnesium sulfate, filtered and evaporated under reduced pressure. The residue was purified by column chromatography over silica, eluting with ether:isohexane (2:1) followed by recrystallisation from ethyl acetate:isohexane to give the title compound (0.41 g).

Provenance & Evidence