We describe the use of acyl imidazoles derived from aliphatic carboxylic acids for
the N-heterocyclic carbene/organic photoredox co-catalyzed meta-selective functionalization of electron-rich arenes. Compared to our previous work,
a change of the wavelength of the applied LED light from 440 nm to 390 nm promotes
this reaction efficiently.
Key words
N-heterocyclic carbene - photoredox catalysis -
meta-selectivity - acylation - arenes