Methoxymethylation of alcohols catalyzed by sulfated metal oxides

More acidic sulfated metal oxides (SMO) such as SO42-/ZrO2 and SO42-/TiO2 catalyzed the methoxymethylation of alcohols with dimethoxymethane at ambient temperature to achieve a product yield of greater than 90% within a few hours. The reaction displayed a significant steric effect on the product yie...

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Veröffentlicht in:	Catalysis letters 2003-04, Vol.87 (3-4), p.253-256
Hauptverfasser:	LIN, Chiu-Hsun, WAN, Min-Yi, HUANG, Yu-Min
Format:	Artikel
Sprache:	eng
Schlagworte:	Acidic oxides Alcohol Alcohols Ambient temperature Catalysis Catalytic reactions Chemistry Exact sciences and technology General and physical chemistry Metal oxides Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Titanium dioxide Zirconium dioxide
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Zusammenfassung:	More acidic sulfated metal oxides (SMO) such as SO42-/ZrO2 and SO42-/TiO2 catalyzed the methoxymethylation of alcohols with dimethoxymethane at ambient temperature to achieve a product yield of greater than 90% within a few hours. The reaction displayed a significant steric effect on the product yield with a preferential order of primary alcohol > secondary alcohol ≫ tertiary alcohol. The observed steric effect might result from the repulsion between the bulky alkyl group in the alcohol and the two methoxy groups in the protonated dimethoxymethane (oxonium ion).
ISSN:	1011-372X 1572-879X
DOI:	10.1023/A:1023472029190