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2005
Benzofuran derivatives
R 0070
Iridium(III)-Catalyzed Tandem Claisen Rearrangement—Intramolecular
of Aryl Allyl Ethers to Form Dihydrobenzofurans. — The
23- 102 Hydroaryloxylation
Claisen rearrangement of aryl allyl ethers followed by intramolecular hydroaryloxylation offers an interesting method for the synthesis of 2-methyl-substituted dihydrobenzofurans. A catalyst screening reveals that a combination of IrCl3 and AgOTf is most
efficient for the conversion. — (GRANT, V. H.; LIU*, B.; Tetrahedron Lett. 46
(2005) 8, 1237-1239; Chem. Dev., GlaxoSmithKline, Research Triangle Park,
NC 27709, USA; Eng.) — Mais
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