Journal ArticleDOI
Thermal Claisen rearrangement of aryl allenylmethyl ethers: synthesis of 2-(o-hydroxyaryl)buta-1,3-dienes and 4-methyl-2H-1-benzopyrans
TLDR
In this paper, aryl allenylmethyl ethers in diethylene glycol were rearranged to yield 2-(o-hydroxyaryl)buta-1,3-dienes and 4-methyl-2H-1-benzopyrans.Abstract:
Thermal Claisen rearrangement of aryl allenylmethyl ethers in diethylene glycol afforded 2-(o-hydroxyaryl)buta-1,3-dienes and 4-methyl-2H-1-benzopyrans in good yield.read more
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Journal ArticleDOI
Photocycloaddition of arenes and allenes.
TL;DR: A new intramolecular para cycloaddition of arenes with allenes, yielding attractive rigid scaffolds bearing several reactive functionalities to build in further diversity, and was scaled up to multigram quantities without erosion of the typically high yields in photocycloadducts.
Journal ArticleDOI
Iron(III)-Catalyzed Domino Claisen Rearrangement/Regio- and Chemoselective Aerobic Dehydrogenative Cyclization of β-Naphthyl-Substituted-Allenylmethyl Ether.
TL;DR: An FeCl3-catalyzed allenic Claisen rearrangement/regio- and chemoselective aerobic dehydrogenative cyclization domino reaction is developed, providing a wide range of 2-aryl/alkyl, 3-(substituted-vinyl)naphtho[2,1- b]furans in high yields at 95-130 °C in an atom- and step-economic fashion.
Journal ArticleDOI
Six-Membered Ring Systems: With O and/or S Atoms
John D. Hepworth,B. Mark Heron +1 more
TL;DR: In this article, a review of reaction chemistry and new ring synthetic methods for pyranones is presented, which covers work published in the calendar year 2010 and includes new ring synthesis methods for trioxanes, tetraoxane, dioxanes, trithianes and oxathianes.
Journal ArticleDOI
Methods for the Preparation of Allenes Employing Indium- and Zinc-Mediated Dehalogenation Reactions in Aqueous Solutions
TL;DR: Simple and mild methods for the synthesis of allenes, employing indium- and zinc-mediated dehalogenation reactions of vicinal dihalides in an aqueous solvent, are described.
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Diastereocontrol of the Claisen rearrangement by substituents external to the pericyclic array: synthetic studies on betaenone B and stemphyloxin I
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