6-benzyl-2-chloro-8-methyl-7,8-dihydro-5H-1,6-naphthyridine 、
环丙基硼酸 以2-cyclopropyl-8-methyl-5,6,7,8-tetrahydro-1,6-naphthyridine hydrochloride (0.260 g, 63%) was obtained as a white powder的产率得到2-cyclopropyl-8-methyl-5,6,7,8-tetrahydxo-1,6-naphthyridine hydrochloride