Hydrochloric Acid → 1-Cyclopropylmethyl-7-fluoro-5-nitro-1,3-dihydro-indol-2-one

Participants

Reaction Conditions

Reaction Steps

Crude (2,3-difluoro-5-nitrophenyl) acetic acid (2.50 g, 11.5 mmol) and (aminomethyl)cyclopropane (6 eq., 5.98 ml, 0.0691 mol) are mixed in DMSO (10 ml) and stirred at 45° C. for 20 hours. 2N Hydrochloric acid (40 ml) is added in one portion and the mixture stirred at room temperature for 2 hours. The resulting light yellow precipitate is filtered, washed with water and ether, and dried under vacuum to give the title compound as a yellow solid. HPLC r.t. 4.91 min; MS for C12H11FN2O3 m/z 251.2 (M+H)+.

Provenance & Evidence