The conjugate addition of triarylmethyls to systems such as butadiene, isoprene, and even maleic anhydride has been described by Conant and Scherp'and Conant and Chow. 2 We have found that tribiphenylmethyl and triphenylmethyl add to styrene and triphenylmethyl adds to vinyl acetate to give products composed of one molecule of olefin and two molecules of free radical, Thus, this addition reaction of triarylmethyls is not as restricted ...
[Miller, Christopher W.; Hoyle, Charles E.; Valente, Edward J.; Magers, David H.; Joensson, E. Sonny Journal of Physical Chemistry A, 1999 , vol. 103, # 32 p. 6406 - 6412]