Pyridine → HCID 11305002, compound

Participants

Reaction Steps

To a solution of 504.4 mg (1.20 mmol) of 4-(6-amino-7-ethylamino-4-quinazolinyl)-N-benzyl-1-piperazinethiocarboxamide obtained in Example 461 in 10 ml of dimethylformamide were added 0.29 ml (3.60 mmol) of pyridine and 0.13 ml (1.49 mmol) of oxalyl chloride under ice-cooling, followed by overnight stirring at room temperature in an atmosphere of argon. Then, the resulting mixture was heated at 80° C. with stirring for 5 hours. The reaction mixture was allowed to cool to room temperature and then poured into water, and sodium chloride was added thereto. The precipitated crystals were collected by filtration, washed with water, and dried, followed by purification by silica gel chromatography to give the desired compound as colorless crystals.

Provenance & Evidence