Dehydrogenative Lactonization of Diols in Aqueous Media Catalyzed by a Water‐Soluble Iridium Complex Bearing a Functional Bipyridine Ligand. Issue 1 (24th November 2013)

• Record Type: Journal Article
• Authors: Fujita, Ken‐ichi; Ito, Wataru; Yamaguchi, Ryohei
• Is Part Of: ChemCatChem. Volume 6:Issue 1(2014:Jan.)
• Page Start: 109
• Page End: 112
• Publication Date: 2013-11-24
• Subjects: Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.201300717
• Languages: English
• ISSNs: 1867-3880

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A new catalytic system for the dehydrogenative lactonization of a variety of benzylic and aliphatic diols in aqueous media was developed. By using a water‐soluble, dicationic iridium catalyst bearing 6, 6′‐dihydroxy‐2, 2′‐bipyridine as a functional ligand, highly atom economical and environmentally benign synthesis of various lactones was achieved in good to excellent yields. Recovery and reuse of the catalyst were also accomplished by a simple phase separation and the recovered catalyst maintained its high activity at least until the fifth run.</p> </abstract>