Pentanoyl chloride is an acyl chloride derived from pentanoic acid. It is a colorless liquid that is used to attach the valeroyl group. It is usually produced by chlorination of valeric acid.
Reactions
Like related acyl chlorides, valeroyl chloride hydrolyzes readily:
CH<sub>3</sub>(CH<sub>2</sub>)<sub>3</sub>C(O)Cl + H<sub>2</sub>O â CH<sub>3</sub>(CH<sub>2</sub>)<sub>3</sub>CO<sub>2</sub>H + HCl
Alcohols react to give esters:
CH<sub>3</sub>(CH<sub>2</sub>)<sub>3</sub>C(O)Cl + ROH â CH<sub>3</sub>(CH<sub>2</sub>)<sub>3</sub>CO<sub>2</sub>R + HCl
Amines react to give amides:
CH<sub>3</sub>(CH<sub>2</sub>)<sub>3</sub>C(O)Cl + R<sub>2</sub>NH â CH<sub>3</sub>(CH<sub>2</sub>)<sub>3</sub>C(O)NR<sub>2</sub> + HCl
Benzene reacts under conditions of the Friedel-Crafts reaction to give valerophenone:
CH<sub>3</sub>(CH<sub>2</sub>)<sub>3</sub>C(O)Cl + C<sub>6</sub>H<sub>6</sub> â CH<sub>3</sub>(CH<sub>2</sub>)<sub>3</sub>C(O)C<sub>6</sub>H<sub>5</sub> + HCl
References