Dichloromethane → HCID 178452819, Verbindung

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

20 G. of 2,4-diamino-6-[3,6-dihydro-1(2H)-pyridyl]pyrimidine-3-oxide are mixed with 250 ml. of methylene chloride and 35 ml. of triethylamine, stirred and cooled to 5° C. The mixture is treated with 45 ml. of chloroformic acid butyl ester and stirred at room temperature for 6 hours. The mixture obtained is washed with water, extracted with methylene chloride and evaporated under reduced pressure. The residue is recrystallized from ethanol, there being obtained dibutyl 6-[3,6-dihydro-1(2H)-pyridyl]-2,4-pyrimidine-dicarbamate-3-oxide, having a melting point of 131°-132° C.

Herkunft & Nachweise