Mercury(II) trifluoroacetate-mediated cyclisation of aryl allenic ethers
TL;DR: Mercury(II) trifluoroacetate brings about a facile cyclisation of aryl allenic(aryl 2,3-butadien-1yl) ethers to 4-methyl-2H-1-benzopyrans.
About: This article is published in Tetrahedron Letters.The article was published on 1991-11-04. It has received 17 citations till now. The article focuses on the topics: Aryl & Mercury (element).
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TL;DR: The electrophilic cyclization of substituted propargylic aryl ethers by I2, ICl, and PhSeBr produces 3,4-disubstituted 2H-benzopyrans in excellent yields.
Abstract: The electrophilic cyclization of substituted propargylic aryl ethers by I2, ICl, and PhSeBr produces 3,4-disubstituted 2H-benzopyrans in excellent yields. This methodology results in vinylic halides or selenides under mild reaction conditions and tolerates a variety of functional groups, including methoxy, alcohol, aldehyde, and nitro groups.
140 citations
TL;DR: Gold-catalyzed intramolecular hydroarylation of allenic anilines and phenols offers an efficient route to dihydroquinoline and chromene derivatives under mild reaction conditions, leading to a highly selective formation of six-membered rings.
110 citations
TL;DR: In this paper, a variety of mono-and disubstituted phenols are alkylated with propargyl bromide to give phenyl 2-propynyl ethers, which were further coupled with aryl iodides under Sonogashira reaction conditions to give 3-phenoxy-1-aryl-1propyne derivatives.
37 citations
TL;DR: In this article, N-alkyl-N-allenylmethylanilines with magnesium monoperoxyphthalate in methanol-water underwent tandem transformations to furnish Nalkyl 2-ethenylindoles in good yield.
Abstract: Treatment of N-alkyl-N-allenylmethylanilines with magnesium monoperoxyphthalate in methanol–water underwent tandem transformations to furnish N-alkyl-2-ethenylindoles in good yield.
16 citations
TL;DR: In this paper, a stereocontrolled synthetic approach to E and Z -substituted methylene-3,4-dihydro-2 H -1-benzopyrans is described from acyclic derivatives using as a key step the palladium-catalyzed intramolecular cyclic carbopalladation of iodoalkynes.
12 citations
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TL;DR: A number of allyl allenyl ethers (1) have been synthesised and shown to undergo the Claisen rearrangement as discussed by the authors, which is consistent with a concerted mechanism for these rearrangements.
21 citations