Nucleophilic 5-endo-trig Cyclization of 3,3-Difluoroallylic Ketone Enolates:Synthesis of 5-Fluorinated 2-Alkylidene-2,3-dihydrofurans.
Autor: | Fujita, Takeshi, Sakoda, Kotaro, Ikeda, Masahiro, Hattori, Masahiro, Ichikawa, Junji |
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Zdroj: | Synlett; Jan2013, Vol. 24 Issue 1, p57-60, 4p |
Abstrakt: | 3,3-Difluoroallylic ketones readily undergo nucleophilic 5-endo-trig cyclization through their metal enolates to afford 5-fluorinated 2-alkylidene-2,3-dihydrofurans. O-Cyclization exclusively occurred via intramolecular substitution of the vinylic fluorines. [ABSTRACT FROM AUTHOR] |
Databáze: | Complementary Index |
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