2.5- Diacetoxy-2,5-dimethyl-3-hexyne

Hydrogenation of 2,5-diacetoxy-2,5-dimethyl-3-hexyne 10 over 0% palladium-on-carbon is exceptionally complex. Seven different products are formed together with acetic acid. All are hydrogenolysis products arising from the initially formed 2,5-diacetoxy-2,5-dimethyl-3-hexene 11. One of these, 2,5-dimethyl-2-acetoxy-4-hexene 12 forms in as much as 4S yield. 

The triple bond in esters of acetylenic alcohols behaves similarly. 2,5-Diacetoxy-2,5-dimethyl-3-hexyne is converted by a 2% aqueous solution... 

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