Irradiation of methyl methacrylate (MMA) in the presence of acyl- and alkyl-cobalt ‘salophen’ reagents leads to good yields of oligomers [(11)–(13)] by way of a novel catalytic ‘hydrocobaltation–dehydrocobaltation’ sequence; hydrocobaltation of the dimer (11)[to (14)] followed by conversion of the latter into (15) in the presence of styrene demonstrates the possibilities for ‘reactivation’ of oligomers of MMA for further chemical studies.
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Bandaranayake et al. (1988) studied this question.