2-METHYL-3-HYDROXY-4H-pyran-4-one is prepared by contacting 1(2-furyl)-1-ethanol in aqueous solution with two equivalents of a halogen oxidant at room temperature and then heating until the hydrolysis of the formed 4-halo-dihydropyran intermediate is substantially complete. Other valuable related gamma-pyrones are prepared in analogous manner from appropriate alcohols.
Synthesis, Physicochemical Properties, and Biological Evaluation of Hydroxypyranones and Hydroxypyridinones: Novel Bidentate Ligands for Cell-Labeling
作者:Beverley L. Ellis、Anne K. Duhme、Robert C. Hider、M. Bilayet Hossain、Safia Rizvi、Dick van der Helm
DOI:10.1021/jm960220g
日期:1996.1.1
The synthesis of a range of hydroxypyranones and hydroxypyridinones with potential for the chelation of indium(III) is described. The crystalstructures of two of the indiumcomplexes are presented. The distribution coefficients of the ligands and the corresponding iron(III), gallium(III), and indium(III) complexes are reported. Good linear relationships between the distribution coefficients of the
Intermediates for the preparation of gamma-pyrones
申请人:Pfizer Inc.
公开号:US04387235A1
公开(公告)日:1983-06-07
2-methyl-3-hydroxy-4H-pyran-4-one is prepared by contacting 1(2-furyl)-1-ethanol in aqueous solution with two equivalents of a halogen oxidant at room temperature and then heating until the hydrolysis of the formed 4-halo-dihydropyran intermediate is substantially complete. Other valuable related gammapyrones are prepared in analogous manner from appropriate alcohols.
3,4-Dihalo-tetrahydrophyran-5-one useful as intermediates for the
申请人:Pfizer Inc.
公开号:US04368331A1
公开(公告)日:1983-01-11
(2-methyl-3-hydroxy-4h-pyran-4-one is prepared by contacting 1(2-furyl)-1-ethanol in aqueous solution with two equivalents of a halogen oxidant at room temperature and then heating until the hydrolysis of the formed 4-halo-dihydro-pyran intermediate is substantially complete. Other valuable related gamma-pyrones are prepared in analogous manner from appropriate alcohols.