Manganese Reagents. Potassium Permanganate. Sodium Permanganate Barium Permanganate. Manganese Dioxide. Manganese (III) Acetate.

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Presentation transcript:

Manganese Reagents

Potassium Permanganate. Sodium Permanganate Barium Permanganate. Manganese Dioxide. Manganese (III) Acetate.

Lec. 3

Sodium Permanganate TL 1981, heterogeneous reaction in benzene - 1° alcohols are oxidized to acids - 2° alcohols are oxidized to ketones - multiple bonds are not oxidized Lec. 3

Barium Permanganate (BaMnO 4 ) TL 1978, Oxidation of 1° and 2° alcohols to aldehydes and ketones- No over oxidation - Multiple bonds are not oxidized - similar in reactivity to MnO 2

Manganese Dioxide Review: Synthesis 1976, 65, Selective oxidation of ,  - unsatutrated (allylic, benzylic, acetylenic) alcohols. Lec. 3

Manganese Dioxide Review: Synthesis 1976, 65, 133 -Activity of MnO 2 depends on method of preparation and choice of solvent. - cis & trans allylic alcohols are oxidized at the same rate without isomerization of the double bond.

Lec. 3

Manganese (III) Acetate  -hydroxylation of enones Synthesis 1990, 1119 TL , 5839 Lec. 3