Triphenylphosphine → 7-{3-[4-(2-fluoroethyl)piperazin-1-yl]propoxy}-4-[(4-fluoro-2-methyl-1H-indol-5-yl)oxy]-6-methoxyquinazoline

Participants

Reaction Steps

Diisopropyl azadicarboxylate (230 μl, 1.17 mmol) was added dropwise to a solution of 3-[4-(2-fluoroethyl)piperazin-1-yl]propan-1-ol (203 mg, 1.07 mmol), triphenylphosphine (357 mg, 1.36 mmol) and 4-[(4-fluoro-2-methyl-1H-indol-5-yl)oxy]-7-hydroxy-6-methoxyquinazoline (330 mg, 0.97 mmol), (prepared as described for the starting material in Example 7), in dichloromethane (8.5 ml). The reaction mixture was stirred at ambient temperature for 1.5 hours and then loaded directly onto a silica column, eluting with a mixture of methanol in methylene chloride (11/89) to give 7-{3-[4-(2-fluoroethyl)piperazin-1-yl]propoxy}-4-[(4-fluoro-2-methyl-1H-indol-5-yl)oxy]-6-methoxyquinazoline (413 mg, 83%) as a white solid.

Provenance & Evidence