Pd/Cu‐catalyzed decarboxylative/directCH alkenylations of heteroarenes with α‐fluoroacrylic acid is reported. This method offers step‐economical and stereocontrolled access to valuable heteroarylated monofluoroalkenes as both Z and E isomers, which are known to be useful in the synthesis of fluorinated biomolecules.
A gem of a reaction: The palladium‐ and copper‐catalyzed base‐assisted directCH fluoroalkenylation of heterocycles 1 with gem‐bromofluoroalkenes (E)‐2 is reported. This method offers step‐economical and stereocontrolled access to valuable trisubstituted heteroarylated monofluoroalkenes (Z)‐3.
The condensation of (chloromethyl)heterarenes with aromatic aldehydes was investigated, resulting in a simple and flexible general procedure for the synthesis of 2-aryl-1-chloro-1-heteroarylalkenes. The best reaction conditions were found to be heating in N,N-dimethylformamide in the presence of chlorotrimethylsilane as a promoter and water-scavenger.