Derivatives of fused 3-hydroxymethyl-pyran-4-ones as a mobile keto–allyl system
Adolf Philipp,Ivo Jirkovsky +1 more
TLDR
Syntheses of 3-hydroxymethyl-4H,5H-pyrano(3,4-c)(1)benzopyran-4-one, 7, and 3hydroxy-methyl-4h,5h-(1) benzothiopyrano-4,3-b)pyran(4,4,1)-4-1, 8, from 2,2-difluoro-4methyl-5h-mixture-of-4m,5m, and (1Abstract:
Syntheses of 3-hydroxymethyl-4H,5H-pyrano(3,4-c)(1)benzopyran-4-one, 7, and 3-hydroxy-methyl-4H,5H-(1)benzothiopyrano(4,3-b)pyran-4-one, 8, from 2,2-difluoro-4-methyl-5H-(1)benzopyrano- and (1)benz...read more
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The synthesis and antifungal activity of 2-amino-4-aryl-4H,5H-[1]benzothiopyrano[4,3-b]pyran-3-carbonitriles and 2-alkoxy-4-aryl-5H-[1]benzothiopyrano[4,3-b]pyridine-3-carbonitriles
TL;DR: In this paper, the synthesis of a series of 2-amino-4-aryl-4 H,5 H -[1]benzothiopyrano[4,3- b ]pyran-3-carbonitriles and 2-alkoxy-4,aryl-5 H was described.
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A novel synthetic route to phenyl-substituted pyridines synthesis of [1]benzopyrano[4,3-b]pyridines [1]benzothiopyrano[4,3-b]pyridines and pyrido[3,2-b] [1,4]benzothiazines(1-azaphenothiazines).
TL;DR: In this article, a reaction of 1,3-diphenylpropenone with malononitrile in base affords 1,4-dipsyl-2-methoxypyridine-3-carbonitrile.
Journal ArticleDOI
The synthesis of naphthothiopyranopyranones and naphthothiopyranopyranthiones
TL;DR: The synthesis of fused tetracyclic naphthothiopyranopyranones from dihydronaphthiotropyranone I or II has been studied in this article.
Journal ArticleDOI
Untersuchungen an 1,3‐Dicarbonyl‐Verbindungen, 20. Mitt. 3‐Acyl‐4,5‐dihydro‐5‐methyl‐4‐oxo‐pyrano[3,2‐b]indole
Klaus Gärlitzer,Andreas Dehne +1 more
TL;DR: On treatment with POCl3/DMF the BF2 chelate 2, obtained from the 1,3-dicarbonyl compound 1, yields the fused 3-formyl-4-pyrone 3 as discussed by the authors.