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Organic Chemistry

Blazing goIITian

Joined:	5 Mar 2007
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24 Oct 2007 23:36:28 IST

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447

simple rxn

None

2 R₂C=O ---------------------- R₂ C(OH)^____C (OH)R₂
                 1) mg/ ether
                 2) H₂O

if         2) H⁺

what's the reaction?

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Comments (5)

Aditya Arora

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24 Oct 2007 23:37:33 IST

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Srry, could not understand the problem, please could you type it again !!!

Nithya

Blazing goIITian

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24 Oct 2007 23:50:46 IST

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hope its clear

Aditya Arora

Blazing goIITian

Joined: 3 Dec 2006

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25 Oct 2007 00:02:10 IST

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I think the reaction that you have typed is correct.

And when excess H+ is added, R-CH₂-R is formed.

I am nt too sure, please wait for other replies too

Thank you

arun-rashi

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Joined: 19 Oct 2006

Posts: 1057

25 Oct 2007 07:21:10 IST

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first reaction is known as bimolecular reduction where two moles of ketones are taken with magnesium amalgum in benzene solvent to form bitertery alcohol.if this reacts with H+ it form ketone by pinacol-pinacolone type rearrangement.

arun-rashi

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Joined: 19 Oct 2006

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25 Oct 2007 07:27:42 IST

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for example if we take CH₃COCH₃(acetone) for reduction it form (CH3₎₂-CH(OH)-CH(OH)-C(CH3)₂pinacol,this reacts with H+,by alkyl shift and deprotonation it form pinacolone (CH3)₃C-COCH₃this easily give haloform test because it contain -COCH₃ group.so all other reaction in same reagents give similar type of product.

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