Anhydrides: Difference between revisions
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Anhydrides are the chemical reaction of two [[carboxylic acid|carboxylic acids]], which produces an [[acid anhydride|acid anhydride]] and a [[water|water]] [[molecule|molecule]]. <br> | |||
CH<sub>3</sub>CH<sub>2</sub>COOH + CH<sub>3</sub>CH<sub>2</sub>COOH → CH<sub>3</sub>CH<sub>2</sub>COOCOCH<sub>2</sub>CH<sub>3 </sub>+ H<sub>2</sub>O<br>propanoic acid + propanoic acid → hexanoic anhydride (propanoic propanoic anhydride) | CH<sub>3</sub>CH<sub>2</sub>COOH + CH<sub>3</sub>CH<sub>2</sub>COOH → CH<sub>3</sub>CH<sub>2</sub>COOCOCH<sub>2</sub>CH<sub>3 </sub>+ H<sub>2</sub>O<br>[[propanoic acid|propanoic acid]] + [[propanoic acid|propanoic acid]] → [[hexanoic anhydride|hexanoic anhydride]] ([[propanoic propanoic anhydride|propanoic propanoic anhydride]]) | ||
Acid anhydrides are significant in organic chemistry as acid anhydrides are involved in [[esterification|esterification]] with alcohol as a reagent without an [[catalyst|catalyst]] to form an [[ester|ester]]<ref>N. Goaly https://chemrevise.files.wordpress.com/2018/11/6-1-3-revision-guide-carboxylic-acids-and-esters.pdf view online 05/12/2018</ref>. | |||
(C<sub>2</sub>H<sub>5</sub>CO)<sub>2</sub>O + CH<sub>3</sub> CH<sub>2</sub>OH → CH<sub>3</sub>CH<sub>2</sub>COOH + CH<sub>3</sub>CH<sub>2</sub>COCH<sub>2</sub>CH<sub>3</sub> | (C<sub>2</sub>H<sub>5</sub>CO)<sub>2</sub>O + CH<sub>3</sub> CH<sub>2</sub>OH → CH<sub>3</sub>CH<sub>2</sub>COOH + CH<sub>3</sub>CH<sub>2</sub>COCH<sub>2</sub>CH<sub>3</sub> | ||
<br>Esters are used for industrial purposes as such as flavouring and perfumes. | <sub></sub>hexanoic anhydride + ethanol → propanoic acid + ethyl propanoate<br> | ||
propanoic propanoic anhydride | |||
Esters are used for industrial purposes as such as flavouring and perfumes. | |||
=== References === | |||
<references /> | |||
Latest revision as of 09:52, 8 December 2018
Anhydrides are the chemical reaction of two carboxylic acids, which produces an acid anhydride and a water molecule.
CH3CH2COOH + CH3CH2COOH → CH3CH2COOCOCH2CH3 + H2O
propanoic acid + propanoic acid → hexanoic anhydride (propanoic propanoic anhydride)
Acid anhydrides are significant in organic chemistry as acid anhydrides are involved in esterification with alcohol as a reagent without an catalyst to form an ester[1].
(C2H5CO)2O + CH3 CH2OH → CH3CH2COOH + CH3CH2COCH2CH3
hexanoic anhydride + ethanol → propanoic acid + ethyl propanoate
propanoic propanoic anhydride
Esters are used for industrial purposes as such as flavouring and perfumes.
References
- ↑ N. Goaly https://chemrevise.files.wordpress.com/2018/11/6-1-3-revision-guide-carboxylic-acids-and-esters.pdf view online 05/12/2018