Methyl iodide → HCID 20368075, compound

Participants

Reaction Steps

By treating 6-chloropyrazolo[1,5-a]pyrido[4,3-d]pyrimidin-9(4H)-one of Example 1 with methyl iodide according to the procedure of Example 5 for the preparation of 6-chloro-2,4-dimethylpyrazolo[1,5-a]pyrido[4,3-d]pyrimidin-9(4H)-one, 6-chloro-4-methylpyrazolo[1,5-a]pyrido[4,3-d]pyrimidin-9(4H)-one is obtained, yield: 76%; m.p. >300°.

Provenance & Evidence