N'-(2-cyano-5-{3-[(RS)-N-(ethoxycarbonyl)-S-methylsulphonimidoyl]benzyloxy}-4-methoxyphenyl)-N,N-dimethylformimidamide 、
间氨基苯甲腈 在
silica gel 作用下,
以
methanol-dichloromethane 为溶剂,
以gives the desired product in 71% yield (82 mg)的产率得到(RS)-S-{3-[({4-[(3-cyanophenyl)amino]-6-methoxyquinazolin-7-yl}oxy)methyl]-phenyl}-N-(ethoxycarbonyl)-S-methylsulphoximide