Topic
Benzopyran
About: Benzopyran is a research topic. Over the lifetime, 1889 publications have been published within this topic receiving 15235 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: A one-pot method has been described to synthesize benzopyran-annulated pyrano[2,3-c]pyrazoles, effectively by combining O-alkenyloxy/alkynyloxy-acetophenones with various pyrazolones in TEAA under microwave irradiation.
Abstract: A one-pot method has been described to synthesize benzopyran-annulated pyrano[2,3-c]pyrazoles, effectively by combining O-alkenyloxy/alkynyloxy-acetophenones with various pyrazolones in triethylammonium acetate (TEAA) under microwave irradiation. While combination of O-allyloxy- or O-prenyloxy-acetophenones with pyrazolones occurred efficiently, that of O-propargyloxy-acetophenones was found effective in the presence of ZnO catalyst, via a domino Knoevenagel–hetero-Diels–Alder (DKHDA) reaction. Aminobenzopyran frameworks were also synthesized, after nitro-containing products were reduced in tandem with iron(II) in an acidic medium. The in vitro antiproliferative activity of these compounds was measured and discussed against gram-positive, gram-negative and M. tuberculosis bacteria, fungi, and various representative human solid tumor cell lines, in addition to their ferric reducing antioxidant capability.
8 citations
TL;DR: A detailed investigation of the reaction of hippuric acid with dimedone and triethyl orthoformate or other one-carbon sources in acetic anhydride yielding the benzopyran derivative 3 and many byproducts is described in this article.
8 citations
TL;DR: In this article, 1,2,4-triazine, pyridine, and benzopyran derivatives have been synthesized from N-(2-benzothiazolyl)cyanoacetamide via its reaction with some electrophiles.
Abstract: Novel 1,2,4-triazine, pyridine, and benzopyran derivatives have been synthesized from N-(2-benzothiazolyl)cyanoacetamide via its reaction with some electrophiles. The structure of the synthesized compounds was established by analytical and spectral data.
8 citations
TL;DR: An efficient synthesis of the title benzopyranodione derivatives based on a Michael addition/cyclization sequence between 2-(1-hydroxyalkyl)-1,4-benzoquinones and enamines (or an imine) is described in this article.
Abstract: An efficient synthesis of the title benzopyranodione derivatives based on a Michael addition/cyclization sequence between 2-(1-hydroxyalkyl)-1,4-benzoquinones and enamines (or an imine) is described.
8 citations
Patent•
03 Dec 19848 citations