Aims and Objectives: A one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-one derivatives by threecomponent cyclo-condensation of isatoic anhydride, aldehydes and amine or ammonium acetate has been developed using 3,5-Bis(trifluoromethyl) phenylammonium triflate (BFPAT) as a new organocatalyst.

Materials and Methods: All of the obtained products are known compounds and identified by IR, 1HNMR, 13CNMR and melting points.

Results: A wide variety of structurally different aldehydes reacted easily and rapidly to result in the relating 2,3-dihydroquinazolin-4(1H)-ones in good to excellent yield.

Conclusion: We have demonstrated an extremely effective and new process for synthesizing 2,3- dihydroquinazolin-4(1H)-ones employing BFPAT as a novel organocatalyst in one-pot fashion.

目的与目的：利用3,5-双（三氟甲基）三酸酐，醛与胺或乙酸铵的三组分环缩合反应，一锅合成2,3-二氢喹唑啉-4（1H）-一衍生物。三氟甲磺酸苯铵（BFPAT）作为新型有机催化剂。

材料和方法：所有获得的产物均为已知化合物，通过IR，1HNMR，13CNMR和熔点鉴定。

结果：多种结构不同的醛容易快速反应，从而以良好或极好的收率得到相关的2,3-二氢喹唑啉-4（1H）-酮。

结论：我们已经证明了使用BFPAT作为一锅法新颖的有机催化剂来合成2,3-二氢喹唑啉-4（1H）-的极有效和新方法。