tert-butyl 2-chloro-5,6-dihydropyrido[3,4-d]pyrimidine-7(8H)-carboxylate 、
3-fluoro-4-(methanesulfonylmethyl)aniline 在
Pd-PEPPSI-(2,6-(3-pentyl)pentylphenyl-2H-imidazol-2-ylidene)
Cl-o-picoline 、
caesium carbonate 作用下,
以
1,4-二氧六环 为溶剂,
以75 %的产率得到tert-butyl 2-{[3-fluoro-4-(methanesulfonylmethyl)phenyl]amino}-5H,6H,7H,8H-pyrido[3,4-d]pyrimidine-7-carboxylate