Give the mechanism of the following reactions: 

i) Perkin condensation

ii) Michael addition

iii) Wolff – Kishner reduction

Sure, here's a concise overview of the mechanisms for each reaction:

i) Perkin Condensation:

The Perkin condensation involves the formation of a β-keto ester from an aromatic aldehyde and an acid anhydride in the presence of a basic catalyst like sodium or potassium hydroxide. The reaction proceeds in several steps:

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