Open AccessJournal Article
Regio- and site-selective heteroannulation reaction promoted by m-chloroperbenzoic acid on 3-(1,3-disubstituted 3-buten-1-yl)-4-hydroxycoumarins. Synthesis of 3,4-dihydro-2-hydroxymethyl-2H,5H-pyrano[2,3-b][1]benzopyran-5-ones.
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This article is published in Gazzetta Chimica Italiana.The article was published on 1986-01-01 and is currently open access. It has received 5 citations till now. The article focuses on the topics: Hydroxymethyl & Benzopyran.read more
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A novel tandem ferrier rearrangement-cyclisation. Synthesis of chiral pyrano[2,3-b][1]benzophyran system.
TL;DR: In this paper, a chiral pyrano[2,3-b] benzopyrans were synthesized by reaction of 2-C-acetoxymethylglycals 1 and 2 with phenols under Lewis acid catalysis.
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Synthesis of the (4S, 5R)-5-hydroxy-decan-4-olide (L-factor) and of the (R)-decan-4-olide from a chiral sulphoxide
TL;DR: In this paper, the condensation of optically pure (+)-R-n-hexyl 4-methylphenyl sulphoxide on the succinic diester produced the 4-oxo-5-sulphinyl decanoate.
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Electron impact mass spectrometry of polyannulated oxygen heterocycles with cyclic orthoester or acetal moieties
TL;DR: The mass spectrometric behavior of the pairs of diastereoisomeric 3-methyl- and 3-phenyl-substituted 3,11b-epoxy-2,3,4,5,5a, 11b-hexahydro-5a-hydroxyoxepino[3,2-c][1]benzopyran-6-ones 5,6 and 7,8] have been studied in detail with the aid of exact mass measurements, B/E linked scans, collisional experiments and deuterium
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A new regioselective synthesis of 2,3,4,5-tetrahydro-6H-oxepino[3,2-c]pyran-6-ones, and [1]benzopyran-6-ones
TL;DR: In this article, an anti-Markovnikow hydration of some olefin derivatives of 4-hydroxy-2-pyrones and 4-Hydroxy-coumarins, followed by a regioselective intramolecular dehydration, involving the primary alcohols obtained and the enolic oxygen of the rings, promoted by Amberlyst 15 in boiling toluene, were obtained in fair yields.
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