Imidazole → (3-Ethynyl-phenyl)-[6-(2-imidazol-1-yl-ethoxy)-7-(2-methoxy-ethoxy)-quinazolin-4-yl]-amine Dihydrochloride

Participants

Reaction Steps

The title product of Example 30 (110 mg, 0.253 mmol) in DMF (2 mL) was treated with imidazole (172 mg, 2.53 mmol) at 110° C. for 48 hours. The reaction mixture was partitioned between CHCl3 and saturated aqueous NaHCO3. The organic extracts were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. The crude product (125 mg) was chromatographed on silica using 10% methanol/CH2Cl2 to provide 86 mg of pure title product as its free base. This white solid was dissolved in a minimum volume of CHCl3, and titrated with 2 equivalents of 1M HCl in ether to precipitate the title product as a white solid dihydrochloride salt (95 mg; 78%; M.P. 85°-100° C. (dec); LC-MS: 430 (MH+); anal. RP18-HPLC RT: 4.13 min.).

Provenance & Evidence