Triethylamine → HCID 178527248, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 6-amino-4-[(3-bromophenyl)amino]quinazoline (J Med Chem, 1995;38:3482) (0.30 g, 0.95 mmol) in THF (20 mL) under nitrogen was added Et3N (3.5 mol eq., 3.33 mmol, 245 μL), a catalytic amount of DMAP and chloroethanesulfonyl chloride (1.2 mol eq., 1.14 mmol, 119 μL) dropwise. The reaction was stirred at 25° C. for 1 hour and then diluted with saturated NaHCO3 and extracted with EtOAc. The combined organic extracts were washed with brine, dried over anhydrous Na2SO4, concentrated under reduced pressure, and chromatographed on silica gel eluting with MeOH/CH2Cl2/EtOAc (3:47:50). Crystallization from CH2Cl2/hexane gave N-[4-[(3-bromophenyl)amino]quinazolin-6-yl]vinylsulfonamide (210 mg, 54%) as a cream powder, mp 217° C. (dec).

Provenance & Evidence