1: (i) benzene, (ii) aq. H2SO4 2: Py*HCl / Heating View Scheme

sodium cyanide in dimethyl sulfoxide T=160 - 170°C; 12 h;

1: With diisobutylaluminium hydride in dichloromethane; toluene T=-78 - 20°C; 2.16667 h; 2: With water; acetic acid in dichloromethane; toluene T=0°C;