Results In the present work dithioimides were generally prepared by employing Lawesson's pr~ cedure.~ Dithiosuccinimides possess a low-intensity band in the UV spectra (EtOH) at around 410 nm (e-200), and a more intensive band near 320 nm (E-4 X lo4), assigned to be n,? r* and A, T*, respectively. 6 First, intramolecular hydrogen abstraction was tested with a series of N-alkyldithiosuccinimides 1 and 2, which were, after irradiation, recovered ...