Acetonitrile → HCID 23350234, compound

Participants

Reaction Steps

3.0 Parts of 2-(2,4-dichloro-5-hydroxyphenyl)-5,6,7,8-tetrahydro-1,2,4-triazolo[4,3-A]pyridin-3(2H)-one prepared as described above in Example 3, 1.4 parts of 1-bromo-2-chloroethane, 1.5 parts of anhydrous potassium carbonate and 20 parts of dry acetonitrile were combined and refluxed for 6 hours followed by stirring for 72 hours at room temperature. The reaction mixture was poured into 200 parts of water. The aqueous suspension of the product was extracted three times with 200 parts of methylene chloride. The organic extracts of the product were dried with anhydrous sodium sulfate. The solvent was stripped from the product at reduced pressure on a rotary evaporator. The resulting dark oil was crystallized from ether yielding 0.2 parts of a light brown solid with m.p. 148°-150°.

Provenance & Evidence