Journal ArticleDOI
Synthesis of 3-substituted coumarins via sequential pericyclic transformations of δ-aryloxymethylacrylic acids and enophiles
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TLDR
In this paper, a new procedure for the synthesis of 3-functionally substituted coumarins via sequential Claisen and ene reactions of δ-aryloxymethylacrylic acids and anophiles has been developed.About:
This article is published in Tetrahedron Letters.The article was published on 1985-01-01. It has received 5 citations till now. The article focuses on the topics: Pericyclic reaction & Ene reaction.read more
Citations
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Journal ArticleDOI
Generation and Cycloaddition Behavior of Spirocyclic Carbonyl Ylides. Application to the Synthesis of the Pterosin Family of Sesquiterpenes
TL;DR: In this article, the pterosin family of sesquiterpenes were synthesized using a cyclic carbonyl ylide, which undergoes a subsequent dipolar cycloaddition reaction.
Journal ArticleDOI
A novel route to substituted 3-methylidenechroman-2-ones and 3-methylchromen-2-ones
Tomasz Janecki,Tomasz Wąsek +1 more
TL;DR: In this paper, 3-methylidenechroman-2-ones were efficiently synthesized by adding various nucleophiles to 3-diethoxyphosphorylchromen-2, followed by Horner-Wadsworth-Emmons reaction of the adducts with formaldehyde.
Journal ArticleDOI
A Novel Cycloaddition Reaction of α-Diazo-γ-amido Ketones Catalyzed by Rhodium(II) Acetate. Scope and Mechanistic Details of the Process†
TL;DR: In this article, an amido-substituted spiro cyclopentyl epoxide was found to undergo cycloaddition in the presence of any significant amount of water, and then conjugate addition with the activated π-bond of the dipolarophile to give a zwitterion intermediate.
Journal ArticleDOI
A reinvestigation of the claisen rearrangement of methyl γ-aryloxycrotonates a convenient synthesis of 3-ethylidenebenzofuran-2(3H)-ones
TL;DR: In this paper, the synthesis and Claisen rearrangement of methyl γ-aryloxycrotonates have been investigated and a number of them have been successfully rearranged to a mixture of Z and E 3-ethylidenebenzofuran-2(3H)ones in refluxing ethylene glycol.
References
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Journal ArticleDOI
The tandem claisen-ene rearrangement: a method for the stereocontrolled synthesis of functionalized cyclopentanoids
TL;DR: The tandem Claisen-ene rearrangement described in this paper has been shown to have a presence of oxy-ene products, and the presence of co-occurrence is established.
Journal ArticleDOI
Übergangsmetallkatalysierte selbstkondensation von (E)-benzaldoxim und röntgenographische strukturbestimmung des produktes
Journal ArticleDOI
A new route to the synthesis of 3-methylenecoumarins-via Lewis acid catalyzed rearrangement of methyl α-aryloxymethylacrylates
TL;DR: Methylα-aryloxymethylacrylates as discussed by the authors have been found to rearrange to furnish the methylenecoumarins when refluxed in methylene chloride in the presence of anhydrous AlCl 3.
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