(TGA-DTG), and Brunauer–Emmett–Teller (BET) measurements. The catalytic activity of this nanocomposite was successfully tested through the one-pot synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones via three-component couplings of phthalhydrazide, aromatic aldehydes, and malononitrile. The heterogeneous catalyst could be recovered easily and reused without significant loss of its catalytic activity
在目前的工作中,从低成本稻壳灰(RH-SiO 2)合成了无定形
二氧化硅纳米粒子。纳米粒子随后通过溶胶-凝胶法(RH @ [SiPr
DABCO @ BuSO 3 H] HSO 4)用含有双电荷的重氮二氮杂
双环[2.2.2]辛烷的酸性
离子液体改性。通过傅立叶变换红外光谱(FT-IR),扫描电子显微镜(
SEM),热重分析-导数热重分析(TGA-DTG)和Brunauer-Emmett-Teller(BET)对这一布朗斯台德固体酸的结构性质进行了系统研究) 测量。通过一锅合成1 H-
吡唑并[1,2- b]成功地测试了该纳米复合材料的催化活性。通过邻苯二甲酰
肼,芳族醛和
丙二腈的三组分偶联反应制得] phthalazine-5,10-diones 。该多相催化剂可以容易地回收和再利用而不会显着损失其催化活性。