4-Oxo-1H-and-2H-[1]benzopyrano[4,3-c]pyrazoles. Preparation from 4-hydroxycoumarin or 3-chromonecarboxylic acid derivatives.
- 31 December 1983
- journal article
- Published by Elsevier in Tetrahedron Letters
- Vol. 24 (4) , 381-384
- https://doi.org/10.1016/s0040-4039(00)81413-6
Abstract
No abstract availableThis publication has 12 references indexed in Scilit:
- Synthesis of Coumarins with 3:4-Fused Ring Systems and their Physiological ActivitySynthesis, 1982
- Synthesis of the N-alkyl isomers of 4-ethoxycarbonyl-or-acetyl-3(5)-alkyl-or-aryl-5(3)-acylpyrazoles from 3(2H)-furanones. Structure determinationThe Journal of Organic Chemistry, 1978
- Reactions of 4-Oxo-4H-1-benzopyran-3-carboxylic Acids with Phenylhydrazine, Guanidine, and HydroxylamineSynthesis, 1978
- Carbon-13 magnetic resonance study of solvent stabilized tautomerism in pyrazolesThe Journal of Organic Chemistry, 1977
- Chemical and carbon-13 nuclear magnetic resonance reinvestigation of the N-methyl isomers obtained by direct methylation of 5-amino-3,4-dicyanopyrazole and the synthesis of certain pyrazolo[3,4-d]pyrimidinesThe Journal of Organic Chemistry, 1975
- Base rearrangement of chromone-3-carboxylic esters to 3-acyl-4-hydroxycoumarinsThe Journal of Organic Chemistry, 1974
- Carbon-13 magnetic resonance studies of azoles. Tautomerism, shift reagent effects, and solvent effectsThe Journal of Organic Chemistry, 1974
- 3 The Metabolism and Biological Actions of CoumarinsProgress in Medicinal Chemistry, 1974
- Structure and Anticoagulant Activity of Bridge-Substituted DicoumarolsJournal of Medicinal Chemistry, 1967
- Pyrazolo‐cumarine und Pyrazolyl‐cumaroneEuropean Journal of Organic Chemistry, 1965