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Reductive cleavage of the SeSi bond in PhSeSiR3 (R3 = Ph2tBu) leads to the generation of the corresponding silyl radical and the anion PhSe−. These can be employed in situ for a large number of cyclizations, as shown schematically below. X = Cl, Br.
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Ganesh Pandey (1996) studied this question.
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