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
Předmět:
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