sodium hydroxide; N-benzyl-N,N,N-triethylammonium chloride in dichloromethane 4 h; Ambient temperature;

sodium hydroxide; N-benzyl-N,N,N-triethylammonium chloride in dichloromethane 4 h; Ambient temperature;

sodium hypophosphite; sulfuric acid; sodium nitrite 1.) glacial acetic acid, water; 2.) sulfuric acid, 48 h, 0 deg C; Yield given. Multistep reaction;