Khan Academy on a Stick
Amides, Anhydrides, Esters and Acyl Chlorides
Carboxylic Acid Derivatives - Amides, Anhydrides, Esters and Acyl Chlorides
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Carboxylic Acid Derivatives - Amides, Anhydrides, Esters and Acyl Chlorides
If the above player doesn't work, you can try this direct link.