1: molybdenum hexacarbonyl, H2O / acetonitrile / 12 h / Heating 2: 97percent hydrazine, acetic acid / 12 h / Ambient temperature View Scheme

acetic acid in methanol; ethyl acetate; toluene

piperidine; acetic acid in toluene 24 h; Heating;

1: 1.) n-butyllithium / 1.) THF, hexane, -78 deg C, 2 h, 2.) RT, 8 h 2: 69 percent / methanol. HCl / 24 h / Heating 3: molybdenum hexacarbonyl, H2O / acetonitrile / 12 h / Heating 4: 97percent hydrazine, acetic acid / 12 h / Ambient temperature View Scheme

1: 69 percent / methanol. HCl / 24 h / Heating 2: molybdenum hexacarbonyl, H2O / acetonitrile / 12 h / Heating 3: 97percent hydrazine, acetic acid / 12 h / Ambient temperature View Scheme

1: 1.) n-butyllithium / 1.) THF, hexane, -78 deg C, 2 h, 2.) RT, 8 h 2: 69 percent / methanol. HCl / 24 h / Heating 3: molybdenum hexacarbonyl, H2O / acetonitrile / 12 h / Heating 4: 97percent hydrazine, acetic acid / 12 h / Ambient temperature View Scheme

hydrazine hydrate; acetic acid 12 h; Ambient temperature; Yield given;