Phosphorus oxychloride → 4-Chloro-6-methoxy-7-(2-methoxyethoxy)quinazoline

Participants

Reaction Conditions

Reaction Steps

According to the procedure described in Example 6A Step 5, a mixture of 6-methoxy-7-(2-methoxyethoxy)quinazolin-4(3H)-one (7.83 g, 31.3 mmol) and POCl3 (20 mL) in toluene (50 mL) was heated at 125° C. for 5 hours, to afford 4-chloro-6-methoxy-7-(2-methoxyethoxy)quinazoline as a solid (8.098 g, 96%). 1H NMR (300 MHz, DMSO-d6) δ 8.88 (s, 1H), 7.49 (s, 1H), 7.41 (s, 1H), 4.36 (t, 2H), 4.01 (s, 3H), 3.76 (t, 2H), 3.34 (s, 3H).

Provenance & Evidence