Oxidative Cleavage of Alkynes with KMnO4
Description: Potassium permanganate (KMnO4) will cleave alkynes to give carboxylic acids.
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what is the solvent for this
“With ordinary solutions of permanganate or dichromate yields are generally low, and the reaction is seldom a useful synthetic method; but high yields can be obtained by oxidizing with KMnO4 dissolved in benzene containing the crown ether 18-crown-6. The crown ether coordinates with K+ permitting the KMnO4 to dissolve in benzene. ” March’s Advanced Organic Chemistry 5th ed. p. 1526.
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Thank ou Professor
i request for a mechanism for the cleavage of the tripple bonds by the pottasium permanganate
“Notes: Note where a terminal alkyne is being cleaved (examples 1 and 3) one of the products is carbon dioxide.”
You mean examples 2 and 4?
Yes. thanks, I’ll fix that!