Furo-Fused 2H-Chromenes: Synthesis and Photochromic Properties. -Two alternative approaches for the synthesis of furo-fused chromenes ( III) and (IV) starting from hydroxybenzofurans (I) are given. All the new chromenes exhibit photochromic behavior at room temperature. -(POZZO,
ChemInform Abstract: Photochromic Properties of Spiro[fluorene-chromenes].
β Scribed by Sergei Aldoshin; Igor Chuev; Olga Filipenko; Jean Luc Pozzo; Vladimir Lokshin; Gerard Pepe
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 26 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0931-7597
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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v
In the 2H-chromene series, complexation of the aromatic ring with chromium tricarbonyl, under thermal conditions, is totally regioselective even when aromatic substituents are introduced on the pyran ring. The complexation stabilizes the open form of these photochromic compounds and reduces the ther