Phosphorus oxychloride → HCID 86683183, compound

Participants

Reaction Steps

A solution of 2,7-dimethoxyquinazolin-4-ol (155 mg, 0.752 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 removed under vacuum to give 4-chloro-2,7-dimethoxyquinazoline (61 mg, 36% yield). MS: MS m/z 225.1 (M++1).

Provenance & Evidence