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Issue 42, 2020
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Enantioselective Lewis base catalyzed phosphonyldifluoromethylation of allylic fluorides using a C-silyl latent pronucleophile

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Abstract

The first enantioselective phosphonyldifluoromethylation is enabled by the use of diethyl (difluoro(trimethylsilyl)-methyl)phosphonate reagent as a latent pronucleophile in the Lewis base catalyzed substitution of allylic fluorides. The reaction proceeds as a kinetic resolution to produce both the difluoromethylphosphonate products and the remaining fluorides in good yields and with high stereoselectivity. The use of cinchona based alkaloid catalysts enables the facile synthesis of both enantiomers of the difluoromethylphosphonate products.

Graphical abstract: Enantioselective Lewis base catalyzed phosphonyldifluoromethylation of allylic fluorides using a C-silyl latent pronucleophile

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Article information


Submitted
10 Mar 2020
Accepted
08 Apr 2020
First published
08 Apr 2020

Chem. Commun., 2020,56, 5689-5692
Article type
Communication

Enantioselective Lewis base catalyzed phosphonyldifluoromethylation of allylic fluorides using a C-silyl latent pronucleophile

Y. Zi, M. Lange and I. Vilotijevic, Chem. Commun., 2020, 56, 5689
DOI: 10.1039/D0CC01815E

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