Pyridine → HCID 69083478, compound

Participants

Reaction Steps

To a stirred solution of crude 8,8-dimethyl-6-(2-trifluoromethyl-phenyl)-8H-quinoxaline-5,7-dione (0.190 g) in dichloromethane (2.0 ml) at ambient temperature was added pyridine (0.054 g) followed by isobutryl chloride (isopropyl-C(O)—Cl, 0.064 g) and the reaction mixture stirred for 1 hour. The reaction mixture was concentrated and the residue purified by chromatography on silica gel (eluent 5-95% ethyl acetate in isohexane) to give isobutyric acid 8,8-dimethyl-7-oxo-6-(2-trifluoromethyl-phenyl)-7,8-dihydro-quinoxalin-5-yl ester (compound F1 of Table F) (0.162 g).

Provenance & Evidence