5-chloro-7-(cyclopropylmethylamino)pyrazolo[1,5-a]pyrimidine-3-carbaldehyde 、
triphenylphosphoranylidene succinimide 在
甲醇 作用下,
以
甲醇 为溶剂,
反应 4.0h,
以to provide 510 mg (77%) of 3-((5-chloro-7-(cyclopropylmethylamino)pyrazolo[1,5-a]pyrimidin-3-yl)methylene)pyrrolidine-2,5-dione的产率得到3-((7-(cyclopropylamino)-5-(pyridin-4-ylamino)pyrazolo[1,5-a]pyrimidin-3-yl)methylene)pyrrolidine-2,5-dione