hydrogen; palladium on activated charcoal in ethanol 16 h;

1: Et3N / acetonitrile / 0.5 h / 0 °C 2: 0 deg C, 1 h, 25 deg C, 10 min 3: 50 percent / thiourea / acetonitrile; ethanol / 48 h / 40 °C 4: 30 percent / 2-thiopyridinedisulphide, Ph3P / acetonitrile / 6 h / Heating 5: 90 percent / H2 / Pd/C / methanol / 14 h / 25 °C View Scheme

1: 30 percent / 2-thiopyridinedisulphide, Ph3P / acetonitrile / 6 h / Heating 2: 90 percent / H2 / Pd/C / methanol / 14 h / 25 °C View Scheme

1: 50 percent / thiourea / acetonitrile; ethanol / 48 h / 40 °C 2: 30 percent / 2-thiopyridinedisulphide, Ph3P / acetonitrile / 6 h / Heating 3: 90 percent / H2 / Pd/C / methanol / 14 h / 25 °C View Scheme

1: 90 percent / trifluoroacetic acid / 1 h / Ambient temperature 2: 41 percent / thiourea / acetonitrile; ethanol / 72 h / 40 °C 3: 14 percent / triphenylphosphine, 2,2'dithiopyridine / acetonitrile / 6 h / Heating 4: 100 percent / H2 / 10 percent Pd/C / ethanol / 16 h View Scheme

Pseudomonas tabaci NCPPB 2730 in water 72 h; Mechanism;