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 paper, an ortho-rhomm-bic modification of the title compound of C10H10O3 was described, where the molcules are linked via inter-molecular C-H⋯O hydrogen bonds into infinite chains which extend in the [100] direction and are stacked along [001].
Abstract: In addition to the known triclinic modification of the title compound, an orthorhombic modification is now described. In the crystal packing of the title compound, C10H10O3, the molecules are linked via intermolecular C–H⋯O hydrogen bonds into infinite chains which extend in the [100] direction and are stacked along [001].
7 citations
TL;DR: Fluorescent ligands of 5-HT1A receptors have been synthesized and their affinity and specificity for these sites are reported in this article, where the authors show that these ligands have a high affinity for specific sites.
7 citations
TL;DR: In this article, a solid obtained in the dimerisation of ageratochromene (6,7-dimethoxy-2,2-dimethyl-1-benzopyran)(II) in the presence of acid has been shown to be 5,6,6a,6b,7,12b-hexahydro-1,2,10,11,11-tetramethoxy -5,5,7.7, 7,7tetramerethylcyclopenta[1, 2-c;5
Abstract: A solid obtained in the dimerisation of ageratochromene (6,7-dimethoxy-2,2-dimethyl-1-benzopyran)(II) in the presence of acid has been shown to be 5,6,6a,6b,7,12b-hexahydro-1,2,10,11-tetramethoxy-5,5,7,7-tetramethylcyclopenta[1,2-c;5,4,3-d′e′]bis[1]benzopyran (IV) by a study of its n.m.r. and mass spectra.
7 citations
TL;DR: The title aldehyde as discussed by the authors gives the bischromones 2, 3, 3 and disalicyloylbenzene 5 with sodium naphthalenide; a mixture of 3 and chromanone 22 with zinc in methanol; 3, carbinol 6 and diol 8 with zinc ion in acetic acid; and acetates 7 and 9 with Zn-Ac2O-AcONa.
Abstract: The title aldehyde 1 gives the bischromones 2, 3 and disalicyloylbenzene 5 with sodium naphthalenide; a mixture of 3 and chromanone 22 with zinc in methanol; 3, carbinol 6 and diol 8 with zinc in acetic acid; and acetates 7 and 9 with Zn–Ac2O–AcONa.
7 citations
Patent•
06 Jan 1975
TL;DR: In this paper, anti-allergic agents present the following structural formula: ##SPC1## In which R is --H, lower alkyl or an alkali metal cation.
Abstract: Anti-allergic agents present the following structural formula: ##SPC1## In which R is --H, lower alkyl or an alkali metal cation. R2 is alkyl of 1 to 6 carbon atoms or hydroxyalkyl of 2 to 6 carbon atoms.
7 citations