toluene-4-sulfonic acid 3-cyclopropyl-1-(3-methanesulfonylaminophenyl)-8-methyl-2,4,7-trioxo-1,2,3,4,7,8-hexahydro-pyrido[2,3-d]pyrimidin-5-yl ester 、
4-溴-2-氟苯胺 在
氯仿 、
丙酮 作用下,
反应 3.0h,
以to give N-{3-[5-(4-bromo-2-fluoro-phenylamino}-3-cyclopropyl-8-methyl-2,4,7-trioxo-3,4,7,8-tetrahydro-2H-pyrido[2,3-d]pyrimidin-1-yl]phenyl)-methanesulfonamide 17 (3.0 g, 83%) as a white solid的产率得到N-{3-[5-(4-bromo-2-fluoro-phenylamino)-3-cyclopropyl-8-methyl-2,4,7-trioxo-3,4,7,8-tetrahydro-2H-pyrido[2,3-d]pyrimidin-1-yl]phenyl}-methanesulfonamide