1-Bromo-2-Chloroethane → HCID 14838046, compound

Participants

Reaction Steps

A mixture of 3-amino-7-butyl-5-propylpyrazolo[3,4-d]pyrimidine-4,6(5H, 7H)-dione(8 g), 1-bromo-2-chloroethane(3.7 ml) and potassium carbonate(6.2 g) in DMF(100 ml) was stirred at 50°-60° C. for 12 hr. The reaction mixture was concentrated to dryness, and the concentrate was extracted with chloroform/water. The chloroform layer was washed with water, dried and concentrated to obtain a brown syrup, which was purified by flash chromatography(silica gel 100 g, chloroform). The purified syrupy product was crystallized from isopropylether to obtain colorless needles(21.5 g,66%), m.p. 118°-121° C.

Provenance & Evidence