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: Condensation of cyclic 1,3-diones with alkylidene cyanoacetates in the presence of the quinine-based thiourea renders possible the preparation of various biologically interesting benzopyran structures as mentioned in this paper.
Abstract: Condensation of cyclic 1,3-diones with alkylidene cyanoacetates in the presence of the quinine-based thiourea renders possible the preparation of various biologically interesting benzopyran structures.
3 citations
TL;DR: In this paper, a novel protocol for intramolecular ketyl-olefin radical cyclization with low-valent titanium reagent is outlined, which allows the formation of the benzopyran nucleus from ortho-ally-loxy propiophenones as the sole product in moderate yields via IRC.
3 citations
TL;DR: The sulfoxide derivatives of benzopyran were synthesized and their biological activity was measured as discussed by the authors, and their properties were compared with those of other derivatives of the same drug.
3 citations
TL;DR: In this paper, the authors synthesize a series of benzopyran derivatives by reaction of dimedone, aryl aldehydes and malononitrile in a water:ethanol (70:30) mixture.
Abstract: CuO nanobelts and nanoparticles were selectively synthesized using specific precipitating agents such as NaOH and Na2CO3 , respectively. Catalytic activity of these nanocrystals is explored by synthesizing a series of benzopyran derivatives by reaction of dimedone, aryl aldehydes and malononitrile in a water:ethanol (70:30) mixture. The developed protocol is endowed with appealing features such as a recyclable catalyst, high yields and shorter reaction time.
3 citations