Novel pyrido[2,3-d]pyrimidine derivatives were synthesized through a one-pot three-component approach using HAp-encapsulated-γ-Fe2O3 [γ-Fe2O3@HAp-SO3H] catalyzed condensation of 6-amino-2-(methylthio or ethylthio)pyrimidin-4(3H)-one, Meldrum's acid and aryl aldehydes at 60 °C and under solvent-free conditions. In this protocol the use of nanocatalyst provided a green, useful and rapid method to generate
通过HAp包封的γ -Fe 2 O 3 [ γ -Fe 2 O 3 @ HAp-SO 3 H]催化缩合反应,通过一锅三组分法合成了新型吡啶并[2,3-d]嘧啶衍生物。 6-氨基-2-(甲硫基或乙硫基)嘧啶-4(3 H)-一,Meldrum的酸和芳基醛,在60°C且无溶剂的条件下。在该协议中,纳米催化剂的使用提供了一种绿色,有用且快速的方法,可在较短的反应时间和优异的产率(88%–94%)下生成产物。