2,5-DICHLORO-3-METHYLPYRIDINE [ 59782-90-0 ]

Production methods will methylene chloride acetonitrile 11g (mol) and methyl 0.1 14g acrolein (0.2 mol) join 50ml c nitriles solvents, 200mg cuprous chloride and 200mg zhangmutou butyl phosphorus as catalyst, in 130 ℃ concurrent tube, heating, cooling to room temperature, 6h vacuum to remove the solvent and not reaction raw material, 100 to 120 ℃ / 5mmHg vacuum distillation, get under yellow liquid and slowly crystallization, are hexane washing, dry 3-2 to 5 - methyl pyridine chlorine 108g, yield 40%, mp for 45 ℃. 42 ~.