Triethylamine → 4,6-Dichloro-2-propylquinazoline

Participants

Reaction Steps

6-Chloro-2-propyl-quinazolin-4-ol (810 mg, 3.64 mmol, 1 eq.), phosphorous oxychloride (3.30 mL, 35.1 mmol, 9.64 eq.) and triethylamine (1.63 mL, 11.7 mmol, 3.21 eq.) were refluxed for 2 hours. Stripped 3× from methylene chloride then dissolved in methylene chloride and rinsed 3× with saturated sodium bicarbonate, 1× with brine. Dried and stripped in vacuo to give an amber oil. Purified over silica gel in 9:1 Hexanes/EtOAc. Obtained 510 mg of off-white solids as product. The product was used immediately in Example 121 Part D.

Provenance & Evidence