The present invention relates to a novel benzenedicarboxamide derivative and the use thereof as an insecticide having the formula (I) wherein the chemical groups W
1
to W
9
, and R
1
to R
3
are as defined here-in.
A Simple, Efficient and General Procedure for Acetalization of Carbonyl Compounds and Deprotection of Acetals under the Catalysis of Indium(III) Chloride
作者:Brindaban C. Ranu、Ranjan Jana、Sampak Samanta
DOI:10.1002/adsc.200303154
日期:2004.3
Indium(III) chloride efficiently catalyzes the protection of a variety of aldehydes and ketones to their corresponding 1,3-dioxolanes and dialkyl acetals in refluxing cyclohexane. On the other hand, deprotection of acetals is also achieved in refluxing aqueous methanol under the catalysis of indium(III) chloride.
Highly Efficient Transthioacetalization of O,O-Acetals Catalyzed by Indium(III) Chloride
作者:Brindaban C. Ranu、Arijit Das、Sampak Samanta
DOI:10.1055/s-2002-25347
日期:——
A simple, efficient and general procedure has been developed for the transthioacetalization of O,O-acetals catalyzed by indium(III) chloride in 1,2-dichloroethane.
A series of mesoporous zirconium oxophosphate (M-ZrPO) with different P/Zr molar ratios (0–1.25) has been prepared via a facile one-pot evaporation-induced self-assembly (EISA) strategy. After removing the structure-directing agents, the M-ZrPO with large specific surface area (160 m2 g−1), big pore volume (0.26 cm3 g−1) and narrow pore size distribution (5.64 nm) has been obtained. Small-angle X-ray diffraction (SXRD) and transmission electron microscopy (TEM) results showed that these materials had ordered mesoporous structure. With the increase of P/Zr, the textural properties of M-ZrPO could be improved. Moreover, the ordered mesostructure could be maintained even when treated at 800 °C, indicating the M-ZrPO had attractive thermal stability. NH3-TPD and pyridine-IR analyses showed the presence of abundant Brönsted and Lewis acid sites in the material. The M-ZrPO has been used successfully as solid acid catalyst and showed excellent performance in the ketalization reaction.
通过简单的一锅蒸发诱导自组装(EISA)策略,制备了一系列具有不同P/Zr摩尔比(0-1.25)的中孔锆氧磷酸盐(M-ZrPO)。去除结构导向剂后,获得了具有较大比表面积(160 m² g⁻¹)、大孔体积(0.26 cm³ g⁻¹)和窄孔径分布(5.64 nm)的M-ZrPO。小角X射线衍射(SXRD)和透射电子显微镜(TEM)结果表明,这些材料具有有序的中孔结构。随着P/Zr比的增加,M-ZrPO的织构性质得到改善。此外,即使在800°C下处理后,有序的中孔结构仍能保持,表明M-ZrPO具有吸引人的热稳定性。NH3-TPD和吡啶-IR分析显示材料中存在丰富的Brönsted酸和Lewis酸位点。M-ZrPO成功用作固体酸催化剂,在缩酮反应中表现出优异的性能。
A Novel Cleavage of Five-Membered Cyclic Acetals Using Sodium Hydrogen Telluride
作者:Ping Lue、Wei-Qiang Fan、Xun-Jun Zhou
DOI:10.1055/s-1989-27361
日期:——
Under mild conditions, a variety of 1,3-dioxolanes are easily cleaved in high yields by treatment with sodium hydrogen telluride in ethanol.