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Acylation of 2-methoxynaphthalene with acetic anhydride over silica-embedded triflate catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
44404 46024 2006 6 PDF Available
Title
Acylation of 2-methoxynaphthalene with acetic anhydride over silica-embedded triflate catalysts
Abstract

Silica sol–gel immobilized triflate compounds like La(OTf)3, tert-butyldimethylsilyl trifluoromethanesulfonate (BDMST) and triflic acid (HOTf) were tested in the acylation of 2-methoxynaphthalene with acetic anhydride, leading to 1-acetyl-2-methoxynaphthalene as the major product. The reaction only proceeded with good yields on BDMST and HOTf catalysts, while La(OTf)3 presented a low activity. For BDMST in solvent-free conditions, the resulting TOF was superior to that reported in literature for other heterogeneous catalysts and even for homogeneous triflates. The rates of reactions in various solvents strongly depend on the donor number of these solvents.

Keywords
La(OTf)3; tert-Butyldimethyl silyltrifluoromethanesulfonate; Triflic acid; Acylation of 2-methoxynaphthalene
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Acylation of 2-methoxynaphthalene with acetic anhydride over silica-embedded triflate catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 306, 7 June 2006, Pages 159–164
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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