Organocatalytic Nucleophilic Substitution Reaction of gem-Difluoroalkenes with Ketene Silyl Acetals
Azusa Kondoh, Kazumi Koda, Masahiro Terada*
*Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan, Email: mteradam.tohoku.ac.jp
A. Kondoh, K. Koda, M. Terada, Org. Lett., 2019, 21, 2277-2280.
DOI: 10.1021/acs.orglett.9b00566
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Abstract
Phosphazene P4-tBu effectively catalyzes a nucleophilic substitution reaction of gem-difluoroalkenes with ketene silyl acetals under mild conditions to provide monofluoroalkenes possessing an alkoxycarbonylmethyl group in high yields with high Z selectivities.
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proposed mechanism
Key Words
vinyl fluorides, alkenylations, organocatalysis
ID: J54-Y2019