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Epoxidation of alkenes catalyzed by cobalt(II) calix[4]pyrrole

Paper ID Volume ID Publish Year Pages File Format Full-Text
52838 46890 2007 5 PDF Available
Title
Epoxidation of alkenes catalyzed by cobalt(II) calix[4]pyrrole
Abstract

The new developed epoxidation system utilizing cobalt(II) calix[4]pyrrole as a catalyst in the aldehyde/oxygen as an oxidant was explored. Six calix[4]pyrrole ligands were synthesized and the well characterized ligands were complexed with Co(II) salts. It was disclosed that Co(II) meso-tetrakis (4-methoxyphenyl)-tetramethyl calix[4]pyrrole revealed the best catalytic performance to provide the corresponding epoxide in high yields with excellent selectivity under mild conditions. In addition, the stereoselectivity and regioselectivity studies of the system using cis- and trans-stilbenes and 4-vinylcyclohexene, as chemical probes were thoroughly investigated.

Keywords
Epoxidation; Cobalt(II)calix[4]pyrrole
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 3, March 2007, Pages 310–314
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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