m-Chloroperbenzoic acid → HCID 178448800, compound

Participants

Reaction Steps

9 g of 2-amino-4-tert-butylamino-6-chloropyrimidine are suspended in 90 ml of ethanol. 24.70 g of meta-chloroperbenzoic acid are added dropwise as solution in 250 ml of ethanol. The reaction mixture is stirred at room temperature for 7 hours 30 minutes. It is evaporated to dryness. The residue is taken up in 100 ml of water. The pH is adjusted to 1 by adding concentrated hydrochloric acid. After 1 hour's stirring the precipitate is filtered off on sintered glass and then discarded. The filtrates are adjusted to pH 8 by adding concentrated sodium hydroxide and are then extracted with 3×100 ml of dichloromethane. The organic phase is separated off, dried over sodium sulfate, filtered on paper and evaporated to dryness. The residue obtained is recrystallized from 60 ml of acetonitrile. 1.30 g of 2-amino-4-tert-butylamino-6-chloropyrimidine 3-oxide are obtained.

Provenance & Evidence