1: 97 percent / pyridine 2: 30 percent / methanol / 40 h / Heating 3: 1.) triethylbenzylammonium chloride 2.) sodium dithionite, sodium carbonate / 1.) ethanol-water 2.) ethanol-water, 45 deg C, 5h View Scheme

1: 97 percent / pyridine 2: 30 percent / methanol / 40 h / Heating 3: 1.) triethylbenzylammonium chloride 2.) sodium dithionite, sodium carbonate / 1.) ethanol-water 2.) ethanol-water, 45 deg C, 5h View Scheme

1: 30 percent / methanol / 40 h / Heating 2: 1.) triethylbenzylammonium chloride 2.) sodium dithionite, sodium carbonate / 1.) ethanol-water 2.) ethanol-water, 45 deg C, 5h View Scheme

sodium dithionite; N-benzyl-N,N,N-triethylammonium chloride; sodium carbonate 1.) ethanol-water 2.) ethanol-water, 45 deg C, 5h; Yield given. Multistep reaction;