Triphenylphosphine → 7-(3-(4-Acetylpiperazin-1-yl)propoxy)-4-chloro-6-methoxyquinazoline

Participants

Reaction Steps

4-Chloro-7-hydroxy-6-methoxyquinazoline (3 g, 14.2 mmol), (prepared as described for the starting material in Example 4), 3-(4-acetylpiperazin-1-yl)propan-1-ol (3.2 g, 17.1 mmol), (prepared as described for the starting material in this example hereinbefore), and triphenylphosphine (4.5 g, 17.1 mmol) were stirred together in dichloromethane (140 ml). Diisopropyl azodicarboxylate (3.4 ml, 17.1 mmol) was added dropwise and an ice/water bath used to keep the temperature of the reaction mixture below 10° C. After the addition, the reaction mixture was allowed to warm to ambient temperature and stirred overnight. The mixture was concentrated under reduced pressure. Column chromatography of the residue (2:1 iso-hexane:ethyl acetate then 3%-5% methanol/dichloromethane) gave 7-[3-(4-acetylpiperazin-1-yl)propoxy]-4-chloro-6-methoxyquinazoline (3.96 g, 74%) as a white solid.

Provenance & Evidence