45 Zn / HCl / Hg H2 (Clemmensen reduction C R R1 or NH2NH2 / NaOH (Wolff-Kishner reduction) RX Zn / HCl RH + ZnXCl e.g. Cl H2 CH3 Zn / HCl C H3C CH3 + ZnCl2 H3C C H Its name is….. 46 23