ammonium hydroxide; N-bromosuccinmide 1) water, 25 min; 2) room temperature, 30 min; Yield given. Multistep reaction;

1: 1.) NaH, 3.) aq. NH3 / 1) DMF, 15 min; 2) DMF, 30 min; 3) overnight, room temperature 2: 1.) K2CO3 / 1) DMF, 30 min; 2) DMF, 45 min 3: 1.) N-bromosuccinimide, 2.) aq. NH3 / 1) water, 25 min; 2) room temperature, 30 min View Scheme

1: 1.) K2CO3 / 1) DMF, 30 min; 2) DMF, 45 min 2: 1.) N-bromosuccinimide, 2.) aq. NH3 / 1) water, 25 min; 2) room temperature, 30 min View Scheme