What Is the IUPAC name of α, β-dimethyl valeric acid?
Correct answer: D. 2,3-dimethyl pentanoic acid
- A. 2,3-dimethyl hexanoic acid
- B. 3,4-dimethyl hexanoic acid
- C. 3,4-dimethyl pentanoic acid
- D. 2,3-dimethyl pentanoic acid
Explanation
Valeric acid is the name for pentanoic acid. α carbon is the carbon attached to the carboxyl group. While β carbon is the one attached to α carbon. In IUPAC system, we start numbering the carbon atoms from the carboxyl group so α carbon will be C-2 and β carbon will be C-3. Since one methyl group each is attached to C-2 and C-3, and the parent chain is pentanoic acid, the IUPAC name will be 2,3-dimethyl pentanoic acid.Hence, option D is correct.
Last updated
About Carboxylic Acids
Carboxylic acids are named and studied through the combined effects of the carbonyl and hydroxyl groups, their preparation, acidity and hydrogen bonding. Reactions include neutralisation, esterification, reduction and conversion into acid chlorides, anhydrides, esters and amides, with emphasis on how these derivatives interconvert.
Practise Carboxylic Acids
550 free Carboxylic Acids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
2-hydroxy propanoic acid is also called _ ?
2CH3,COOH+xCa→ Ca (OCOCH3)2 +H2O. Calculate value of "x".
2CH3COOH+ xCa→ Ca (CH3COO)2 +H2.Calculate value of "x".
A carboxylic acid contains:
A compound has the properties below:it is a liquid at room temperature,it is immiscible with water,it does not decolourise acidified potassium manganate(VII).What could it be?