Topic
Benzopyrans
About: Benzopyrans is a research topic. Over the lifetime, 694 publications have been published within this topic receiving 8830 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: O-Stannyl ketyl or acyl radical cyclization of benzaldehyde precursors (I, (IV), and (VIII) followed by oxidation provides access to pyrano- and furanobenzoquinone systems (VII, and (X) as discussed by the authors ).
Abstract: O-Stannyl ketyl or acyl radical cyclization of benzaldehyde precursors (I), (IV), and (VIII) followed by oxidation provides access to pyrano- and furanobenzoquinone systems (VII) and (X).
2 citations
2 citations
TL;DR: In this article, the thermochromic properties of ferrocenyl benzopyrans have been investigated and correlations between the structure of the compounds investigated and their thermochrome properties are discussed.
Abstract: The synthesis and the photochromic behaviour of a series of benzopyrans (otherwise called 2H-chromenes), substituted in the 2-position by a metallocene, have been previously described. Some of these compounds also present thermochromic properties. As the thermochromism has been scarcely studied in the benzopyran series, we describe here a study of the thermochromic properties of ferrocenyl benzopyrans. The correlations between the structure of the compounds investigated and their thermochromic properties are discussed. Copyright © 2004 John Wiley & Sons, Ltd.
2 citations
Patent•
01 Jun 2001
TL;DR: In this article, processes for resolving chiral (2S and (2R) benzopyrans, racemizing (1R) and recycling (2C) racemized benzoprinear agents to increase yield of a desired enantiomer to provide purified or substantially purified bicyclic amino substituted benzopyan derivatives are discussed.
Abstract: Disclosed are processes for resolving chiral (2S) and (2R) benzopyrans, racemizing benzopyrans, and recycling racemized benzopyrans to increase yield of a desired enantiomer to provide purified or substantially purified bicyclic amino substituted benzopyran derivatives. Such benzopyran derivatives are preferably chromans which can be coupled with benzoyl derivatives via an amide bond to produce potent platelet aggregation inhibitors.
2 citations