Water → HCID 11785508, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 197.5 mg (0.38 mmol) of N-(4-phenoxyphenyl)-4-(7-ethylamino-6-nitro-4-quinazolinyl)-1-piperazinecarboxamide (Compound 109) obtained in Example 109 in 4 ml of ethanol was added 30 mg of 10% palladium-carbon, followed by stirring for 7.5 hours in a stream of hydrogen. The catalyst was separared by filtration with Celite and the solvent was evaporated. The obtained residue was dissolved in 10 ml of dimethylformamide, and 187.2 mg (1.15 mmol) of carbonyldiimidazole was added thereto, followed by stirring at 80° C. for 2 hours in an atmosphere of argon. After the reaction mixture was poured into water, the precipitated crystals were collected by filtration, washed with water, and dried, followed by purification by silica gel column chromatography to give 65.7 mg (0.13 mmol) of the desired compound as colorless crystals.

Provenance & Evidence