Tetrahedron Letters p. 4525 - 4526 (1985)
Update date:2022-08-16
Topics:
Endo, Takeshi
Saotome, Yasushi
Okawara, Makoto
It was found that viologen (propyl viologen) acted as an Electron Transfer Catalyst (ETC) in the reduction of aryl ketones with zinc powder. α-Diketones undertook the two-electron reduction to obtain the corresponding benzoins in good yields and aromatic ketones could one-electron reduced selectively to give the corresponding pinacols.
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