Topic
Benzopyran
About: Benzopyran is a research topic. Over the lifetime, 1889 publications have been published within this topic receiving 15235 citations.
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TL;DR: In this article, the mechanism of formation of 6-methyl-4-oxo-4H-[1]-benzopyran-3-carboxaldehyde with 5-amino-3methyl-1-phenylpyrazole in alcoholic reaction media in the presence of 4-toluenesulfonic acid as catalyst was explained.
12 citations
12 citations
TL;DR: In this article, the title compound, an isostere of 4,5′,8-trimethylpsoralen, was prepared in good yield from 7-[(2bromo-allyl)thio]-4,8dimethylcoumarin via a thio-Claisen rearrangement.
12 citations
12 citations
TL;DR: In this paper, photochromic 5′-(1,3-benzothiazol-2-yl)-substituted spiro[indoline-2,3′-naphthopyrans] possessing luminescence properties in both the cyclic and merocyanine forms were synthesized.
Abstract: Novel photochromic 5′-(1,3-benzothiazol-2-yl)-substituted spiro[indoline-2,3′-naphthopyrans] possessing luminescence properties in both the cyclic and merocyanine forms were synthesized. Unlike the 8′-(1,3-benzothiazol-2-yl)-substituted benzopyran analogs, the synthesized compounds are characterized by the lower relative stability of the merocyanine isomers.
12 citations