aldehydes, 6-amino-1,3-dimethylpyrimidine-2,4(1H,3H)-dione and 1H-indene-1,3(2H)-dione using nano Fe2O3@SiO2–SO3H as a catalyst is described. The products are a variety of indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidine-2,4,6(3H)-trione derivatives. The effect of the solvent on the product selectivity was investigated. The morphology, particle size distribution, and some properties of Fe2O3@SiO2–SO3H nanopowders
使用纳米Fe 2进行结构多样的芳基醛,6-
氨基-1,3-二
甲基嘧啶-2,4(1H,3H)-二酮和1H-
茚-1,3(2H)-二酮的高效多组分反应ø 3 @SiO 2 -SO 3 H作为催化剂进行说明。产物是各种
茚并[2',1':5,6]
吡啶[2,3-d]
嘧啶-2,4,6(3H)-三酮衍
生物。研究了溶剂对产物选择性的影响。通过透射电子显微镜(
TEM),动态光散射(DLS),X射线粉末衍射(XRD),Fe 2 O 3 @SiO 2 -SO 3 H纳米粉体的形貌,粒度分布和某些性能。N 2 吸附-解吸等温线和热重分析(TGA)技术。