Treatment of o-nitropropiophenone with sodium acetylide in liquid ammonia at− 70° C gave a yellow phenol, C 18 H 18 O 3 N 2, as a major product. The permanganate oxidation of the phenol gave 2-(1-carbamoylethyl)-2-methyl-3-indolinone, which was synthesized independently. From this result and the spectral data, the structure of the phenol was postulated to be 1-(o-hydroxyphenyl) derivative of the above indolinone. The neutral ...
