Arylalkyne cobalt complexes 5, 6 were prepared and irradiated with e-beam to study their fragmentation focused in alkyne formation. Thioaryl complex 6 showed facile CO ligand release and generated parent alkyne in 89% relative intensity. Meanwhile, hydroxyaryl complex 5 gave alkyne in 6% relative intensity.
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Lee et al. (2016) studied this question.
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