Hi and welcome back to my channel. Today we're going to look at oysters. Esters are made by condensation reactions between alcohols and carboxylic acids.
Water is also produced in this reaction. Alcohols and carboxylic acids react in such a way that the hydrogen will be removed from the alcohol and a hydroxyl group is removed from the carboxylic acid. This produces water.
The oxygen that is left on the alcohol can then bond to the carbon from the carboxylic acid, producing the ester link. Draw the structure of the ester. are produced in each of these reactions.
Esters can be hydrolyzed into alcohols and carboxylic acids by breaking the ester link. In the process, water is also broken and is used to recreate the alcohol and carboxylic acid that formed the ester. Pause the video now and draw the structure of the alcohol and carboxylic acid produced in each hydrolysis reaction.
The first part of an ester's name comes from the alcohol and the second part comes from the carboxylic acid. Here we have ethanol reacting with propanoic acid. We change the name ethanol to be ethyl.
We change the propanoic acid to be propanoate. The iol part shows that this was from the alcohol and the oate ending shows that we have an ester. The name of an ester can be broken down into the alcohol and carboxylic acid that made it.
The butyl part here becomes butanol and the hexanoate part becomes hexanoic acid. Use the endings to help you work out which one is which. Pause the video now and name the alcohol and carboxylic acid that made each ester.
For each ester, name the alcohol and carboxylic acid that were used to make the esters. Then name the esters. Thank you for watching my video. I hope you find it helpful. Please remember to subscribe if you've not already and ring the bell to be notified of new videos.
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