Periodic Mesoporous Silica-Supported Scandium Triflate as a Robust and Reusable Lewis Acid Catalyst for Carbon–Carbon Coupling Reactions in Water

2013 ◽  
Vol 2 (3) ◽  
pp. 486-492 ◽  
Author(s):  
Mingzhen Chen ◽  
Chao Liang ◽  
Fang Zhang ◽  
Hexing Li
Keyword(s):  
Mesoporous Silica ◽  
Lewis Acid ◽  
Acid Catalyst ◽  
Coupling Reactions ◽  
Lewis Acid Catalyst

Highly active, water-compatible and easily separable magnetic mesoporous Lewis acid catalyst for the Mukaiyama–Aldol reaction in water

2014 ◽  
Vol 16 (8) ◽  
pp. 3768-3777 ◽  
Author(s):  
Fang Zhang ◽  
Xiaotao Wu ◽  
Chao Liang ◽  
Xiaoyan Li ◽  
Zhen Wang ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Lewis Acid ◽  
Aldol Reaction ◽  
Acid Catalyst ◽  
Mukaiyama Aldol Reaction ◽  
Highly Active ◽  
Mukaiyama Aldol ◽  
Lewis Acid Catalyst ◽  
Reaction In Water ◽  
Magnetic Mesoporous Silica

A multifunctional magnetic mesoporous silica supported Yb(OTf)3 composite was demonstrated to be an efficient and easily recyclable catalyst for the Mukaiyama–Aldol reaction in water.

Sulfonated dendritic mesoporous silica nanospheres: a metal-free Lewis acid catalyst for the upgrading of carbohydrates

2020 ◽  
Vol 22 (5) ◽  
pp. 1754-1762 ◽  
Author(s):  
Erlen Y. C. Jorge ◽  
Carolina G. S. Lima ◽  
Thiago M. Lima ◽  
Lucas Marchini ◽  
Manoj B. Gawande ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Lignocellulosic Biomass ◽  
Lewis Acid ◽  
Acid Catalyst ◽  
Viable Alternative ◽  
Fine Chemicals ◽  
Silica Nanospheres ◽  
Metal Free ◽  
Lewis Acid Catalyst ◽  
Mesoporous Silica Nanospheres

Lignocellulosic biomass is becoming a viable alternative or a complementary source for obtaining petroleum-derived products such as fuels, polymers and fine chemicals, among others.

Iron-doped mesoporous silica, Fe-MCM-41, as an active Lewis acid catalyst for acidolysis of benzyl chloride with fatty acid

2018 ◽  
Vol 26 (1) ◽  
pp. 261-269 ◽  
Author(s):  
Zhuxiu Zhang ◽  
Mengnan Hu ◽  
Qiumin Mei ◽  
Jihai Tang ◽  
Zhaoyang Fei ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Mesoporous Silica ◽  
Lewis Acid ◽  
Benzyl Chloride ◽  
Acid Catalyst ◽  
Iron Doped ◽  
Lewis Acid Catalyst ◽  
Mcm 41

scholarly journals Glycosylation reactions mediated by hypervalent iodine: application to the synthesis of nucleosides and carbohydrates

2018 ◽  
Vol 14 ◽  
pp. 1595-1618 ◽  
Author(s):  
Yuichi Yoshimura ◽  
Hideaki Wakamatsu ◽  
Yoshihiro Natori ◽  
Yukako Saito ◽  
Noriaki Minakawa
Keyword(s):  
Lewis Acid ◽  
Acid Catalyst ◽  
Hypervalent Iodine ◽  
Carbocyclic Nucleosides ◽  
Coupling Reactions ◽  
Glycoside Bond ◽  
Lewis Acid Catalyst ◽  
Glycosylation Reaction

To synthesize nucleoside and oligosaccharide derivatives, we often use a glycosylation reaction to form a glycoside bond. Coupling reactions between a nucleobase and a sugar donor in the former case, and the reaction between an acceptor and a sugar donor of in the latter are carried out in the presence of an appropriate activator. As an activator of the glycosylation, a combination of a Lewis acid catalyst and a hypervalent iodine was developed for synthesizing 4’-thionucleosides, which could be applied for the synthesis of 4’-selenonucleosides as well. The extension of hypervalent iodine-mediated glycosylation allowed us to couple a nucleobase with cyclic allylsilanes and glycal derivatives to yield carbocyclic nucleosides and 2’,3’-unsaturated nucleosides, respectively. In addition, the combination of hypervalent iodine and Lewis acid could be used for the glycosylation of glycals and thioglycosides to produce disaccharides. In this paper, we review the use of hypervalent iodine-mediated glycosylation reactions for the synthesis of nucleosides and oligosaccharide derivatives.

A Novel Mesoporous Silica-Supported Lewis Acid Catalyst for C—C Bond Formation Reactions in Water.

ChemInform ◽  
2003 ◽  
Vol 34 (46) ◽  
Author(s):  
Pentlavalli Sreekanth ◽  
Sang-Wook Kim ◽  
Taegwhan Hyeon ◽  
B. Moon Kim
Keyword(s):  
Mesoporous Silica ◽  
Lewis Acid ◽  
Bond Formation ◽  
Acid Catalyst ◽  
Lewis Acid Catalyst ◽  
Bond Formation Reactions

A Novel Mesoporous Silica-Supported Lewis Acid Catalyst for CC Bond Formation Reactions in Water

2003 ◽  
Vol 345 (8) ◽  
pp. 936-938 ◽  
Author(s):  
Pentlavalli Sreekanth ◽  
Sang-Wook Kim ◽  
Taegwhan Hyeon ◽  
B. Moon Kim
Keyword(s):  
Mesoporous Silica ◽  
Lewis Acid ◽  
Bond Formation ◽  
Acid Catalyst ◽  
Lewis Acid Catalyst ◽  
Bond Formation Reactions
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