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Acidic isomerization of alantolactone derivatives
A series of derivatives of the natural sesquiterpene lactones alantolactone (1) and isoalantolactone (2) was prepared. The α-methylene-γ-lactone moiety was retained in the structures of these forExpand
Synthesis and cytotoxic activity of α-santonin amino-derivatives
Previously unknown amino-derivatives of the natural sesquiterpene lactone α-santonin were synthesized. The activity of the products against several human tumor-cell lines was studied.
Reaction ofN-(3,3,3-trifluoro-2-trifluoromethylprop-1-enyl)dimethylamine with MgSO4·7H2O. Synthesis of 4,4-difluoro-5-trifluoromethyl-2-(2,2,2-trifluoro-1-trifluoromethylethyl)-4H-1,3-dioxine
Abstract4,4-Difluoro-5-trifluoromethyl-2-(2,2,2-trifluoro-1-trifluoromethylethyl)-4H-1,3-dioxine andcis/trans-3-dimethylamino-2-trifluoromethacryloyl fluoride were obtained by reactionExpand
Synthesis of substituted 2-amino-4,6-bis(nonafluoro-tert-butyl)-1,3,5-triazines
A procedure was developed for the synthesis of substituted 2-amino-4,6-bis(nonafluoro-tert-butyl)-1,3,5-triazines from 2-chloro-4,6-bis(nonafluoro-tert-butyl)-1,3,5-triazine and aliphatic andExpand
Synthesis of 1,1-bis(trifluoromethyl)alkyl isocyanates, carbamates, and ureas
A convenient preparative method for the synthesis of 1,1-bis(trifluoromethyl)alkyl isocyanates was proposed. The reactions of the isocyanates with alcohols, phenols, and alkyl-, aryl-, andExpand
The reaction of α,α-difluoroazides with acetylenic compounds
Abstract Reaction of α,α-difluoroazides — 2H-perfluoropropyl azide and methyl ester of 3-azidoperfluoropropionic acid — with different acetylenes affords 1,2,3-triazoles in high yields. ThermalExpand
Fluorination of olefins with PhSeF3, PhSeF5 and PhTeF5
Abstract Phenyselenium trifluoride, PhSeF3 (PSTF) either oxidatively difluorinates or selenofluorinates olefins, depending on their structures. The pentafluorides PhSeF5 and PhTeF5 appear to beExpand
The reaction of norbornene with selenium(II) and selenium(IV) flourides
Abstract PhSeF adds to norbornene predominantly in a trans -manner to give non-rearranged 2, 3-selenofluorination adducts, 4 and 5, corresponding to exo - and endo -attack. In contrast, PhSeF 3 givesExpand