Direct synthesis of piperazines containing dithiocarbamate derivatives via DABCO bond cleavage

DABCO bond cleavage with dithiocarbamic acid salts was applied as a direct synthetic route for the preparation of a novel category of piperazines containing dithiocarbamate functional group. This metal-free and operationally simple approach can be applied with good to excellent yields and high selectivity. Besides, substituted bis-piperazines and piperidines containing dithiocarbamate groups were successfully prepared via the same protocol using quaternized quinuclidine and bis-quaternized DABCO. © 2020 Elsevier Lt