6]naphthyridine_Kain Industrial Additive

background[1][2] 2-benzyl-5-chloro-1,2,3,4-tetrahydro-[2,6]naphthyridine can be used as a pharmaceutical synthesis intermediate and an organic synthesis intermediate, mainly used in experiments laboratory research and development process and chemical and pharmaceutical synthesis process. preparation[1] 2-benzyl-5-chloro-1,2,3,4-tetrahydro-[2,6]naphthyridine is prepared as follows: step 1: n-ethoxy-3-methylpyridinium iodide: add 3-methylpyridine-n-oxide (50.00g, 458mmol) and anhydrous dichloromethane (90ml) to the round-bottomed flask. ethyl iodide (715.57g,…