Aminoalkyl modified polysilsesquioxanes; synthesis, characterisation and catalytic activity in comparison to related aminopropyl modified silicas

被引：17

作者：

Al-Haq, N ^{[1
]}

Ramnauth, R ^{[1
]}

Kleinebiekel, S ^{[1
]}

Ou, DL ^{[1
]}

Sullivan, AC ^{[1
]}

Wilson, J ^{[1
]}

机构：

[1] Univ London Queen Mary & Westfield Coll, Dept Chem, London E1 4NS, England

来源：

GREEN CHEMISTRY | 2002年 / 4卷 / 03期

关键词：

D O I：

10.1039/b200806h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper we report on the sol-gel synthesis and characterisation (by Si-29 CPMAS and SPE MAS, C-13 CPMAS NMR and elemental analysis as well as nitrogen sorption porosimetry) of new aminopropylated polysilsesquioxanes of types [(RO)(3-n)On/2SiC6H4SiOn/2(OR)(3-n)](x)[(RO)(3-n)SiOn/2(CH2)(3)NH2](y) and [(RO)(3-n)On/2SiC6H4SiOn/2( OR)(3-n)](x)[(RO)(3-n)SiOn/2(CH2)(3)NH2](y)[(RO)(4-n)On/2Si](z) and [(RO)(6-2n)OnSi2C6H4](x)[(RO)(3-n)SiOn/2(CH2)(2)NH(CH2)(2)NH2](y). The catalytic activity of these new polysilsesquioxane supported solid bases in Knoevenagel condensation reactions is described and compared with related aminopropylated silica systems.

引用

页码：239 / 244

页数：6

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