Deprotonative Functionalization of the Difluoromethyl Group
作者:Laura Santos、Armen Panossian、Morgan Donnard、Jean-Pierre Vors、Sergii Pazenok、David Bernier、Frédéric R. Leroux
DOI:10.1021/acs.orglett.0c03380
日期:2020.11.6
3-(difluoromethyl)pyridine has been developed via direct deprotonation of -CHF2 with a lithiated base and subsequent trapping with various electrophiles in THF. In situ quenching gives access to 3-pyridyl-CF2-SiMe2Ph as a new silylated compound, which can be postfunctionalized with a fluoride source to obtain a larger library of 3-(difluoroalkyl)pyridines that could not be accessed via direct deprotonation
Synthesis and some transformations of all three isomers of α,α-difluoropyridinylacetonitrile
作者:Oksana M. Shavrina、Andrii V. Bezdudny、Yuliya V. Rassukana
DOI:10.1016/j.jfluchem.2021.109792
日期:2021.6
An effective preparative approach to fluorinated pyridinylacetonitriles, based on electrophilic fluorination of pyridinylacetonitriles, was developed. Their synthetic potential for obtaining new fluorine-containing building blocks and heterocyclic systems was disclosed.