A novel and useful oxidative intramolecular coupling reaction of phenol ether derivatives on treatment with a combination of hypervalent iodine (III) reagent and …

H Hamamoto, G Anilkumar, H Tohma…

Index: Hamamoto, Hiromi; Anilkumar, Gopinathan; Tohma, Hirofumi; Kita, Yasuyuki Chemistry - A European Journal, 2002 , vol. 8, # 23 p. 5377 - 5383

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Citation Number: 72

Abstract

Abstract The oxidative intramolecular coupling reaction of phenol ether derivatives (nonphenolic derivatives) on treatment with a novel combination of a hypervalent iodine (III) reagent, phenyliodine bis (trifluoroacetate)(PIFA), and heteropoly acid (HPA) was studied. Biaryl compounds were obtained in excellent yields on treatment of highly substituted phenol ethers. On the other hand, spirodienones were specifically formed when one of the ...