Ethyl orthoformate → HCID 10474143, compound

Participants

Reaction Steps

20 g of 6-n-propyl-2-methyl-4-hydrazino-5-[(2'-cyano-4-biphenylyl)methyl]pyrimidine, prepared in Example 12, are heated to reflux for 6 hours in 200 ml of triethyl orthoformate. The mixture is then concentrated under vacuum and the residue is taken up with ether. The crystals obtained are drained and washed with ether to give 18.8 g of 7-n-propyl-5-methyl-8-[(2'-cyano-4-biphenylyl)methyl]-1,2,4-triazolo[4,3-c]pyrimidine in the form of crystals of melting point 153° C.

Provenance & Evidence