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Wittig reaction : The reaction of a ph...

Wittig reaction :
The reaction of a phosphorus ylide with an aldehyde (or) ketone introduces a carbon-carbon double bond is place of the carbonyl bond.

Driving froce of the reaction is high bond energy of (P = O). `(DeltaH=-ve)`.
, Major product (A) is

A

cis-2-butene

B

trans-2-butene

C

iso-butene

D

1-butene

Text Solution

Verified by Experts

The correct Answer is:
B
`PPh_(3)` and O should be on same side.
Hence trans-2-butene will be formed.
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MS CHOUHAN-ALDEHYDES AND KETONES-LEVEL-2
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  7. Degree of unsaturation present in compound (A + B + C) is ?

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  10. Consider reactions A through F. Those carbon atoms undergoing change, ...

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  11. Consider the possible formation of an aldehyde or ketone product when ...

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  12. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  13. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  14. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  15. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  16. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  17. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

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  18. Match the column :

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  19. Reactant (A) is :

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  20. Product (B) is :

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