in benzene 13 h; Heating;

1: 59 percent / CH2Cl2 / 1.) -5 deg C to RT, 2.) RT, 15 min 2: 61 percent / hydroxylamine / ethanol / 71 h / Ambient temperature 3: 54 percent / benzene / 13 h / Heating View Scheme

T=170°C; 3 h; variation of reaction conditions; Product distribution;