Abstract

In this work, nano-AlPO₄/Ti(IV) (NAPT) as a new nanocomposite was prepared and then characterized by FT-IR, XRD, FESEM, TEM, BET and TGA. This nano-catalyst was used for synthesis of dihydropyrano[2,3-c]pyrazole (DHPP) derivatives by one-pot four component reaction of aldehyde, ethyl acetoacetate, malononitrile and hydrazine hydrate. An uncomplicated work-up, high yields of product, short reaction times and use of low-cost catalyst are considerable properties of present procedure.

中文翻译：

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纳米-AlPO4 / Ti（IV）的制备及其在二氢吡喃并[2,3-c]吡唑四组分合成中的可循环再利用催化剂的应用

摘要

在这项工作中，制备了纳米AlPO ₄ / Ti（IV）（NAPT）作为新的纳米复合材料，然后通过FT-IR，XRD，FESEM，TEM，BET和TGA对其进行了表征。该纳米催化剂用于通过醛，乙酰乙酸乙酯，丙二腈和水合肼的一锅四组分反应来合成二氢吡喃并[2,3- c ]吡唑（DHPP）衍生物。简单的后处理，高产率的产物，短的反应时间和使用低成本催化剂是本方法的相当大的特性。