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The silver salt of 12-tungstophosphoric acid: A mild and selective catalyst for the synthesis of β-ketoesters via C–H insertion

Paper ID Volume ID Publish Year Pages File Format Full-Text
51761 46853 2008 4 PDF Available
Title
The silver salt of 12-tungstophosphoric acid: A mild and selective catalyst for the synthesis of β-ketoesters via C–H insertion
Abstract

Aldehydes undergo smooth coupling with ethyl diazoacetate in the presence of 5 mol% silver substituted tungstophosphoric acid (AgTPA) under mild conditions to furnish β-ketoesters in high yields and with high selectivity via C–H insertion. This method is very useful for the preparation of β-ketoesters from both electron-rich as well as electron-deficient aromatic aldehydes. The catalyst can be recycled and reused for three to five subsequent runs with a gradual decrease of activity.

Keywords
Ag-TPA, Ag-Exchanged tungstophosphoric acid; EDA, Ethyl diazoacetate; H3PW12O40, Phosphotungstic acid; HPA, Heteropoly acid; AgHFA, Silver hexafluoroantimonate; AgTFB, Silver tetrafluoroborateAg-heteropoly acid; Carbene insertion; Ethyl diazoacetate; β-ke
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The silver salt of 12-tungstophosphoric acid: A mild and selective catalyst for the synthesis of β-ketoesters via C–H insertion
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 14, 30 August 2008, Pages 2361–2364
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Price after discount Only $4.95
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