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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: pithie on March 25, 2006, 07:00:46 AM

Title: 1-ethynylcyclopentanol
Post by: pithie on March 25, 2006, 07:00:46 AM

hi im new to the forum

can anyone help me explain the mechanism of this reaction involving 1-ethynylcyclopentanol

where i think via a trans electrophillic addition reaction the acetylide group is changed to a diene

Title: Re:1-ethynylcyclopentanol
Post by: pithie on March 25, 2006, 07:11:01 AM

ive got a image for the reaction but cant seem to atach it to the post

Title: Re:1-ethynylcyclopentanol
Post by: Paradoxtom on March 25, 2006, 08:23:03 AM

But 1-ethynylcyclopentanol ist this, without CH3-group


(https://www.chemicalforums.com/proxy.php?request=http%3A%2F%2Fwww.coleparmer.com%2Fcatalog%2Fcatalog_images%2FAGROS15734.jpg&hash=3860778fb3f067f47740d2ac4281fc654d9326ef)

and you will 1-octa-1,3-dien-1-ylcyclopentanol ??

Title: Re:1-ethynylcyclopentanol
Post by: movies on March 26, 2006, 06:47:45 PM

It's a cuprate addition to the alkyne, I'd bet.