Uncommon fluorination of enones with xenon difluoride
作者:Igor I. Gerus、Yury I. Zhuk、Liliya M. Kacharova、Gerd-Volker Röschenthaler、Elena N. Shaitanova、Alexandr E. Sorochinskii、Sergey I. Vdovenko、Jacek Wojcik
DOI:10.1016/j.jfluchem.2019.109413
日期:2020.1
Readily available β-alkoxyvinylpolyfluoroalkyl ketones react with XeF2 to give the products of addition of two Fluorine atoms to the C = C double bond - vic-difluoro ketones, which can be easily converted to α-F enones. We demonstrated chemical evaluation of these compounds by formation of new fluorocontaining enaminones and pyrazoles. In order to obtain new precursors for bioactive compounds we performed
Halogenation of β-Alkoxyvinyl Polyhaloalkyl Ketones: A Convenient Route for the Synthesis of α-Chloro- or α-Bromo-β-alkoxyvinyl Polyhaloalkyl Ketones
作者:Igor I. Gerus、Liliya M. Kacharova、Sergei I. Vdovenko
DOI:10.1055/s-2001-11435
日期:——
A number of α-chloro- and α-bromo-β-alkoxyvinyl polyhaloalkyl ketones 4 and 5 were synthesized in high yields by halogenation of β-alkoxyvinyl polyhaloalkyl ketones 1 with chlorine or bromine and further dehydrohalogenation of dihalo-intermediates 2 and 3 with pyridine. The Z configuration of ketones 4 and 5 was deduced from X-ray analysis and NMR spectra. Some typical nucleophilic reactions of the title compounds 4 and 5 with amines were carried out to check their reactivity.