4-Chloro-6,7,8-trimethoxyquinazoline → 1,2,3,4-Tetrahydro-1,6-dimethyl-2,4-dioxo-3-[1-(6,7,8-trimethoxy-4-quinazolinyl)-4-piperidinyl]quinazoline

Participants

Reaction Steps

The procedure similar to that described in Example 57 was repeated, except that 1.06 g (3.0 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 and 4-chloro-6,7,8-trimethoxyquinazoline was used in place of 4-chloro-6,7-dimethoxyquinazoline. As a result, 365.1 mg (yield: 25%) of Compound 86 was obtained as white crystals.

Provenance & Evidence