MCM-41 type molecular sieves as catalysts for the Friedel-Crafts acylation of 2-methoxynaphthalene

Autor:	Saritha S. Gopie, Herman van Bekkum, E.A. Gunnewegh
Rok vydání:	1996
Předmět:	Process Chemistry and Technology Heterogeneous catalysis Catalysis Acid anhydride Acylation Acetic anhydride chemistry.chemical_compound chemistry Acetyl chloride Organic chemistry lipids (amino acids peptides and proteins) Physical and Theoretical Chemistry Selectivity Friedel–Crafts reaction
Zdroj:	Journal of Molecular Catalysis A: Chemical. 106:151-158
ISSN:	1381-1169
DOI:	10.1016/1381-1169(95)00270-7
Popis:	Molecular sieves of the MCM-41 type were studied as catalysts for the Friedel-Crafts acylation of 2-methoxynaphthalene in the liquid phase. When MCM-41 in the H + form is used as Bronsted-acid catalyst, acylation with acetic anhydride gives substitution predominantly at the 1-position. Increased reaction temperatures lead to a slight decrease of selectivity to acylation at the 1-position. The regenerability of H-MCM-41 is found to be excellent. For the acylation of 2-methoxynaphthalene with acetyl chloride Zn-MCM-41 was studied as a Lewis-acid catalyst, but both selectivity and regenerability are less favourable than in the case of the H-MCM-41 catalysed acylation of with acid anhydride.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c408f4d057184aa616c955c71b8e41c8 https://doi.org/10.1016/1381-1169(95)00270-7 Zobrazit plný text záznamu Full Text from ScienceDirect