Catalysis of the Michael reactions by N,N '-dimethylaminopropyl derivatised micelle templated silica: Effects of solvent and catalyst loading

J E G  Mdoe; J H  Clark; D J  Macquarrie

Catalysis of the Michael reactions by N,N '-dimethylaminopropyl derivatised micelle templated silica: Effects of solvent and catalyst loading

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

A neutral amine templating route was used to prepare dimethylaminopropyl-derivatised micelle templated silicas with various loadings. The resultant materials were characterised by various techniques and were also screened as catalysts in model Michael addition reactions. Results obtained show that materials with surface areas and organic group loading as high as 800 m(2)g(-1) and 3.4 mmol per g of silica, respectively, are obtainable. The materials show moderate to high catalytic activity as well as selectivity in a range of substrates. The activities and selectivities, however, are affected by catalyst loading and type of solvent.

Original language	English
Pages (from-to)	219-234
Number of pages	16
Journal	BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA
Volume	17
Issue number	2
Publication status	Published - Dec 2003

Keywords

catalysis of Michael reactions
N,N '-dimethylaminopropyl-derivatised micelle
templated silicas
effect of catalyst loading
solvent effect
NITROALKANES

Cite this

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title = "Catalysis of the Michael reactions by N,N '-dimethylaminopropyl derivatised micelle templated silica: Effects of solvent and catalyst loading",

abstract = "A neutral amine templating route was used to prepare dimethylaminopropyl-derivatised micelle templated silicas with various loadings. The resultant materials were characterised by various techniques and were also screened as catalysts in model Michael addition reactions. Results obtained show that materials with surface areas and organic group loading as high as 800 m(2)g(-1) and 3.4 mmol per g of silica, respectively, are obtainable. The materials show moderate to high catalytic activity as well as selectivity in a range of substrates. The activities and selectivities, however, are affected by catalyst loading and type of solvent.",

keywords = "catalysis of Michael reactions, N,N '-dimethylaminopropyl-derivatised micelle, templated silicas, effect of catalyst loading, solvent effect, NITROALKANES",

author = "Mdoe, {J E G} and Clark, {J H} and Macquarrie, {D J}",

year = "2003",

month = dec,

language = "English",

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pages = "219--234",

journal = "BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA",

issn = "1011-3924",

publisher = "Chemical Society of Ethiopia",

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TY - JOUR

T1 - Catalysis of the Michael reactions by N,N '-dimethylaminopropyl derivatised micelle templated silica: Effects of solvent and catalyst loading

AU - Mdoe, J E G

AU - Clark, J H

AU - Macquarrie, D J

PY - 2003/12

Y1 - 2003/12

N2 - A neutral amine templating route was used to prepare dimethylaminopropyl-derivatised micelle templated silicas with various loadings. The resultant materials were characterised by various techniques and were also screened as catalysts in model Michael addition reactions. Results obtained show that materials with surface areas and organic group loading as high as 800 m(2)g(-1) and 3.4 mmol per g of silica, respectively, are obtainable. The materials show moderate to high catalytic activity as well as selectivity in a range of substrates. The activities and selectivities, however, are affected by catalyst loading and type of solvent.

AB - A neutral amine templating route was used to prepare dimethylaminopropyl-derivatised micelle templated silicas with various loadings. The resultant materials were characterised by various techniques and were also screened as catalysts in model Michael addition reactions. Results obtained show that materials with surface areas and organic group loading as high as 800 m(2)g(-1) and 3.4 mmol per g of silica, respectively, are obtainable. The materials show moderate to high catalytic activity as well as selectivity in a range of substrates. The activities and selectivities, however, are affected by catalyst loading and type of solvent.

KW - catalysis of Michael reactions

KW - N,N '-dimethylaminopropyl-derivatised micelle

KW - templated silicas

KW - effect of catalyst loading

KW - solvent effect

KW - NITROALKANES

M3 - Article

SN - 1011-3924

VL - 17

SP - 219

EP - 234

JO - BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA

JF - BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA

IS - 2

ER -