(β-<scp>D</scp>-Ribofuranosyl)formamidine in the Design and Synthesis of 2-(β-<scp>D</scp>-Ribofuranosyl)pyrimidines, Including R<sup>F</sup>-Containing Derivatives
作者:Viktor O. Iaroshenko、Sergii Dudkin、Vyacheslav Ya. Sosnovskikh、Alexander Villinger、Peter Langer
DOI:10.1002/ejoc.201300107
日期:2013.5
A wide range of novel 2-(β-D-ribofuranosyl)pyrimidines, including RF-containing derivatives, have been synthesized by the reaction of (β-D-ribofuranosyl)formamidine with various dielectrophilic substrates such as 3-alkoxy- and 3-chloro-1-(polyfluoroalkyl)propen-1-ones, 3-nitro- and 3-(phenylethynyl)chromones and heteroaryl acetylenic ketones.
Studies in fluorinated 1,3-diketones and related compounds. Part XVII. Synthesis and spectroscopic studies of some new 5-alkyl-3-fluoroaryl-1-pentafluoroaryl-pyrazoles and 2-amino-6-alkyl(perfluoroalkyl)-4-aryl pyrimidines
作者:Vineeta Sareen、Sunita Jain
DOI:10.1016/s0022-1139(00)80570-9
日期:1993.8
Six new 3-(4′-fluorophenyl)-1,5-trisubstituted pyrazoles have been synthesized from the appropriate fluorinated 1,3-diketones and pentafluorophenylhydrazine in the presence of absolute ethanol and hydrochloric acid, viz., 1-pentafluorophenyl-3-(4′-fluorophenyl)-5- methylpyrazole, 1-pentafluorophenyl-3-(4′-fluorophenyl)-5-trifluoromethylpyrazole, 5- ethyl-1-pentafluorophenyl-3-(4′-fluorophenyl) pyrazole