Formamidine acetate → HCID 135682057, compound

Participants

Reaction Steps

Heat a solution of 3-amino-2′-trifluoromethyl-biphenyl-4-carboxylic-acid methyl ester (5.0 g, 0.0169 mol) and formamidine acetate (2.8 g, 0.0203 mol) in 2-methoxyethanol at reflux for 8 hours. Cool the mixture and concentrate under reduced pressure to give a dark oil. Dissolve the residue in 10% NaOH and wash the aqueous with ether (3×). Bring the aqueous layer to pH 4 using 12N HCl to produce a milky solution. Extract the solution with EtOAc, wash the EtOAc with brine, dry (Na2SO4) and concentrate under reduced pressure to give 7-(2-Trifluoromethyl-phenyl)-3H-quinazolin-4-one as a beige solid.

Provenance & Evidence