lithium aluminium tetrahydride in diethyl ether Heating;

1: in toluene T=65°C; Schlenk techniqueInert atmosphere; 2: With N-bromosuccinmide in toluene T=-78°C; Schlenk techniqueInert atmosphere; 3: With water in toluene T=20°C; 1 h; Schlenk techniqueInert atmosphere; regioselective reaction;