A new method was developed for the synthesis of fluorine-containing functionally substituted vinyl sulfides and ketene dithioacetals from the corresponding derivatives of a-trifluoromethyl-substituted CH-acids and thiols in the presence of BF(3) . NEt(3).
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作者:A. N. Kovregin、A. Yu. Sizov、A. F. Ermolov
DOI:10.1023/a:1019669820268
日期:——
alpha-Fluorine-containing beta-functionalized vinyl sulfides readily react with N-nucleophiles to form alpha-fluorine-substituted products. The reactions with phenylhydrazines and amidines of acids are accompanied by cyclization at the functional group. Thermal cyclization of cyanotrifluoromethylketene N,S-acetals proceeds at the trifluoromethyl group to give substituted 3-cyanoquinolin-4-ones.
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作者:A. N. Kovregin、A. Yu. Sizov、A. F. Ermolov
DOI:10.1023/a:1024781929253
日期:——
A new method was developed for the synthesis of methoxycarbonyltrifluoromethylthioketene by thermal cleavage of tert-butyl 1,3,3,3-tetrafluoro-2-methoxycarbonylpropenyl sulfide in the presence Of P2O5. This thioketene was demonstrated to exhibit high reactivity in reactions with nucleophiles as well as in ene and diene syntheses.