Topic
Benzopyrans
About: Benzopyrans is a research topic. Over the lifetime, 694 publications have been published within this topic receiving 8830 citations.
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TL;DR: In this article, 2-Aryl-3-hydroxy-2-cyclohexenones are shown to be competent substrates for palladium and ruthenium-catalyzed C-H alkenylation reactions with terminal alkenes, providing, in most cases, benzopyrans.
Abstract: 2-Aryl-3-hydroxy-2-cyclohexenones are shown to be competent substrates for palladium- and ruthenium-catalyzed C–H alkenylation reactions with terminal alkenes, providing, in most cases, benzopyrans.
1 citations
TL;DR: In this paper, the light-intensity-dependent photochromic behavior of 3-Phenyl- and 3-2-naphthylisochromene is investigated.
Abstract: 3-Phenyl- and 3-(2-naphthyl)isochromene show light-intensity-dependent photochromic behavior; the excitations with low- and high-intensity laser pulses produce isomeric open forms by way of one-photon and two-photon processes, respectively, their lifetimes being in the hundred-nanosecond and hundred-microsecond orders, respectively.
1 citations
Journal Article•
TL;DR: The title pyranone as discussed by the authors gives a mixture of pyridines 4 and 7 with ammonia, pyridine 5 and pyrazole 10 with phenylhydrazine, and Pyridine N-oxide 8 with hydroxylamine.
Abstract: The title pyranone 1 gives a mixture of pyridines 4 and 7 with ammonia, pyridine 5 and pyrazole 10 with phenylhydrazine, and pyridine N-oxide 8 with hydroxylamine.
1 citations
Patent•
14 Dec 1994TL;DR: In this paper, 2,3-diaryl-1-benzopyrans and their pharmaceutically acceptable salts are formulated into medicaments, including oral and topical medicaments which are administered to a patient suffering from dermatitis.
Abstract: Methods and pharmaceutical compositions for the treatment of dermatitis are disclosed. 2,3-diaryl-1-benzopyrans and their pharmaceutically acceptable salts are formulated into medicaments, including oral and topical medicaments, which are administered to a patient suffering from dermatitis. The methods and compositions are particularly useful in the treatment of conditions characterized by hyperproliferation of keratinocytes, such as psoriasis.
1 citations
01 Jan 2011
TL;DR: Task specific onium salt has been presented as soluble support in the synthesis of benzopyrans in this paper, which allows for results by far superior to those reported other soluble supports and allows for very easy purifications of reaction products.
Abstract: Task specific onium salt has been presented as soluble support in the synthesis of benzopyrans in this paper. This method allows for results by far superior to those reported other soluble supports and allows for very easy purifications of reaction products.
1 citations