Abstract
A short synthesis of an enantiopure pyrrolobenzodiazepine (PBD) dilactam featuring early installation of the C2-C3 unsaturation is reported. An enantioselective cooperative catalytic cascade followed by self-disproportionation of enantiomers via sublimation afforded the enantiopure 2,3-dihydro-1H-pyrrole key intermediate, 1. N-Acylation followed by reduction and lactam formation furnished the PBD dilactam.
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