74830-30-1Relevant articles and documents
Polymaleinimide Formation in the Electron Transfer Reaction Between N-Bromosuccinimide and Succinimide Anion
Eberson, Lennart,Barry, John E.,Finkelstein, Manuel,Moore, W. Michael,Ross, Sidney D.
, p. 249 - 266 (2007/10/02)
The electron transfer reaction between N-bromosuccinimide (SBr) and succinimide anion (S-) gives predominantly succinimide (SH, ca. 65 percent) but also a small percentage (ca. 10 percent) of a polymeric material, the nature of which has now been elucidated.By NMR spectral comparison with authentic specimens, the polymer was shown to be of the polymaleinimide type.The build-up and decay of maleinimide during the SBr/S- reaction could be followed (NMR).Also, the development of the characteristic, base-induced yellow-red coulor of polymaleinimide could be followed kinetically and the effect of additives studied.Finally, the SBr/S- reaction exhibited weak chemiluminescence.These findings further strengthen the hypothesis that the initial step of the reaction is ET between SBr and S-, forming a cage radical ion/radical pair.Nitrogen-bromine bond cleavage within the cage produces a pair of S*, which react with disproportionation to give SH and maleinimide.The latter then undergoes predominant radical polymerization.The reaction between N-chlorosuccinimide and S- also gave polymaleinimide (40 percent) in addition to SH (47 percent).