Answer to Question #126864 in Organic Chemistry for ani

Question

what are the correct names?

2-dimethylhexane

           

2,4-dimethylheptene

         

1-methyl-2-ethylpentane

             

2-methyl-2-pentyne

1,1,2-trimethyl-2-cyclopentene

2-propyl-2-butylbenzene

Octanol

2-octanal

3-butanone

2,3-diethylbutanoic acid 

Answer 1

Correct names:

3-butanone

Wrong names:

Octanol (you need number before "ol" to identify hydroxyl group position)

2-dimethylhexane (dimethyl need two numbers, before name)

           

2,4-dimethylheptene (need number before heptene to identify double bond position)

         

1-methyl-2-ethylpentane(correct is 3-ethylhexane)

             

2-methyl-2-pentyne (too many substituents for the triple bond)

1,1,2-trimethyl-2-cyclopentene (you need to start numbering from a double bond, correct is 1,2,2-trimethyl-1-cyclopentene)

2-propyl-2-butylbenzene (too many substituents for one position in benzene ring)

2-octanal (correct name - 2-octanone)

2,3-diethylbutanoic acid (correct - 2-ethyl-3-methylpentanoic acid)