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what is peerkin reaction???

what is peerkin reaction???

Grade:12

1 Answers

Ramesh V
70 Points
11 years ago

Starts with the aromatic aldehyde and acid anhydride.Salt of an Carboxylic acid is used to abstract a proton from the alpha carbon of acid anhydride. The carbanion generated would attack the electrophillic centre of aldehyde. This centre is carbonyl carbon. There after an stablised anion is formed. Further hydrolysis gives the required Cinnamic acid.

The Perkin reaction is an organic reaction developed by William Henry Perkin that can be used to make cinnamic acids by the aldol condensation of aromatic aldehydes and acid anhydrides in the presence of an alkali salt of the acid.

The Perkin reaction

You can get the full mechanism preview at :

http://www.springerlink.com/content/h45v0h1782637462/fulltext.pdf?page=1

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