In this work, a highly efficient technique has been documented for the one-pot synthesis of pyrano[2,3-d]pyrimidine and pyrido[2,3-d]pyrimidine derivatives. This method employs 2,2’-bipyridine as a cost-effective and proficient organo-catalyst. All reactions take place within reasonable reaction periods, yielding favorable to excellent results. The reusability of the catalyst is also investigated during the reactions. Moreover, a […]