Radical addition reactions of bromomalononitrile to various alkenes using 2,2'-azobis(2,4-dimethyl-4-methoxyvaleronitrile) (V-70) were examined. The advantages of V-70 which is an effective radical initiator at low temperature in contrast to the other azobis compounds are described, Especially V-70L (the low melting point diastereomer) was found to be the best radical initiator.
Boldt,P. et al., Chemische Berichte, 1967, vol. 100, p. 1281 - 1288