Isopropanol → 3-[1-(6,7-Dimethoxy-2-propyl-4-quinazolinyl)-4-piperidinyl]-1,2,3,4-tetrahydro-1,6-dimethyl-2,4-dioxo-quinazoline

Participants

Reaction Steps

The procedure similar to that described in Example 40 was repeated, except that 354.0 mg (1.0 mmol) of 1,2,3,4-tetrahydro-1,6-dimethyl-2,4-dioxo-3-(4-piperidinyl)-quinazoline hydrobromide (Compound v) obtained in Example 41 was used, 4-chloro-6,7-dimethoxy-2-propylquinazoline was used in place of 4-chloro-6,7-dimethoxyquinazoline, and isopropyl alcohol was used as a reaction solvent in place of methanol. As a result, 174.3 mg (yield: 35%) of Compound 82 was obtained as white crystals.

Provenance & Evidence