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Creating cool fusion: The oxidative fusion of meso-(diarylamino)porphyrins depends heavily on the structures of the diarylamino groups. Bridged diarylamino groups result in the oxidative fusion of 3,5-di-tert-butylphenyl groups to the porphyrin moiety (blue), while non-bridged diarylamino groups invoke formation of nitrogen-embedded aminophenylene-fused porphyrins (red).
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Fukui et al. (2013) studied this question.
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