Organic Chemistry Basics - Result Question 1

1. The IUPAC name for the following compound is

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(a) 3-methyl-4-(3-methylprop-1-enyl)-1-heptyne

(b) 3, 5-dimethyl-4-propylhept-6-en-1-yne

(c) 3-methyl-4-(1-methylprop-2-ynyl)-1-heptene

(d) 3, 5-dimethyl-4-propylhept-1-en-6-yne

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Answer:

Correct Answer: 1. (d)

Solution:

  1. The IUPAC name for the given compound is 3, 5-dimethyl-4-propylhept-1-en-6-yne.

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If both double and triple bonds are present in the compound, the endings like-en-yne, a (numeral) dien-(numeral)-yne etc., are used. Numbers as low as possible are given to double and triple bonds as a set.