Download PDF
Synlett 1998; 1998(6): 625-627
DOI: 10.1055/s-1998-1731
letter
© Georg Thieme Verlag, Rüdigerstr. 14, 70469 Stuttgart, Germany. All rights reserved. This journal, including all individual contributions and illustrations published therein, is legally protected by copyright for the duration of the copyright period. Any use, exploitation or commercialization outside the narrow limits set by copyright legislation, without the publisher's consent, is illegal and liable to criminal prosecution. This applies in particular to photostat reproduction, copying, cyclostyling, mimeographing or duplication of any kind, translating, preparation of microfilms, and electronic data processing and storage.

Michael Additions Catalysed by N,N-dimethyl-3-aminopropyl - Derivatised Amorphous Silica and Hexagonal Mesoporous Silica (HMS)

James E. G. Mdoe* , James H. Clark, Duncan J. Macquarrie
  • *Department of Chemistry, University of York, Heslington, York, YO1 5DD, England
Further Information

Publication History

Publication Date:
31 December 2000 (online)

  PDF Download  Permissions and Reprints All articles of this category

Solid bases prepared by derivatisation of amorphous silica and hexagonal mesoporous silica with dimethylaminopropyl groups are good catalysts for Michael addition reactions. Of the prepared catalysts, those based on hexagonal mesoporous silica show particularly high activities. The sol-gel method used in preparing the catalysts based on hexagonal mesoporous silica enables loading to be increased to more than twice that of those based on amorphous silica which are prepared by the post-modification method.

Michael addition - solid bases - hexagonal mesoporous silica - post-modification - sol-gel method