
Tetrahedron Letters p. 6315 - 6318 (1989)
Update date:2022-07-31
Topics:
Adam, Waldemar
Hueckmann, Sabine
Vargas, Franklin
Phenothiazine derivatives 4-7 efficiently reduce 3,3,4,4-tetramethyl-1,2-dioxetane (1a) to pinacol, whereby catalytic decomposition into acetone is a significant side reaction, while N-methylphenothiazine (9) is oxidized to its sulfoxide by malonyl (2) and dibenzoyl peroxide (3); a single-electron-transfer (SET) process is supported by UV-Vis spectroscopic detection of the phenothiazine radical cation.
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