Reaction of conjugate addition, Chemistry

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Reaction of conjugate addition

This reaction is a "conjugate addition" of cyanide ion on a cyclopropane.  Notice that reaction at the least branched carbon of the cyclopropane happens and that the immediate product of ring opening is a very stable anion.  Heating in acid protonates this anion, hydrolyzes the ester and nitrile groups, and decarboxylates the resulting β -keto acid.

 


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