对甲基苯磺酰异氰酸酯 、
3-benzoyl-1,4-dihydro-6-ethyl-2-methyl-4-oxopyridine 以
乙腈 为溶剂,
反应 2.5h,
以to give 3-benzoyl-6-ethyl-2-methyl-4-[(4-methylphenylsulphonyl)amino]pyridine (D) (0.65 g) as a solid, m.p. 244°-246° C.的产率得到3-benzoyl-6-ethyl-2-methyl-4-[(4-methylphenylsulphonyl)amino]pyridine