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Topic: prediction  (Read 4673 times)

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Offline Morphic flip

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prediction
« on: June 27, 2006, 04:59:06 AM »
(n5-C5H5)(CO)2M(CH2CH2CMe3) + CO ----> product A ----> product B
M = metal.
I think possibly the addition of CO changes the (n5-C5H5) group to
(n4-C5H5) by way of providing the electrons to give product A (below)
(n4-C5H5)(CO)3M(CH2CH2CMe3)
But I don`t know what what product B would be, any help appreciated.
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Offline FeLiXe

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Re: prediction
« Reply #1 on: June 28, 2006, 12:22:18 PM »
what I could think of ist that CO is in the next step inserted between the alkyl group and metal. so you'd get an acyl group
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Offline Morphic flip

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Re: prediction
« Reply #2 on: June 30, 2006, 04:34:57 AM »
What would you make product A and B then?
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Offline Dan

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Re: prediction
« Reply #3 on: July 08, 2006, 03:21:42 PM »
Quote from: Morphic flip on June 27, 2006, 04:59:06 AM
I think possibly the addition of CO changes the (n5-C5H5) group to
(n4-C5H5) by way of providing the electrons to give product A (below)
(n4-C5H5)(CO)3M(CH2CH2CMe3)
But I don`t know what what product B would be, any help appreciated.

Depends on the metal. It will probably be a 16 electron compound, in which case the cp group will remain n5.
Otherwise I agree with your product A
Product B is formed by a migratory insertion
Click on lecture 2 on this page http://www.chem.ox.ac.uk/icl/dermot/organomet98/lectures.html
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