Phosphorus oxychloride → HCID 86683184, compound

Participants

Reaction Steps

A solution of 2-(4-isopropoxyphenyl)-7-methoxyquinazolin-4-ol (495 mg, 1.595 mmol) in POCl3 (2 ml, 21.46 mmol) was refluxed for 4 h. The reaction mixture was concentrated. The residue was dissolved in DCM and the pH was adjusted to 7 with 4N NaOH. The organic phase was collected and dried over sodium sulfate, filtered, then concentrated under vacuum. The crude material was purified by silica gel chromatography using 50% DCM in hexanes. The product fractions were collected and the solvent was removed under vacuum to give 4-chloro-2-(4-isopropoxyphenyl)-7-methoxyquinazoline (420 mg, 80% yield). 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 8.59-8.53 (m, 2H), 8.11 (d, J=9.3 Hz, 1H), 7.24 (dd, J=9.2, 2.4 Hz, 1H), 7.04-7.00 (m, 3H), 4.70 (quin, J=6.0 Hz, 1H), 4.03 (s, 3H), 1.40 (d, J=6.0 Hz, 6H); MS: MS m/z 329.1 (M++1).

Provenance & Evidence