1.

Write the IUPAC name of the compound having the formula CH_3-CH=CH-CH_3 .

Answer»

Solution : There are four C ATOMS in the chain involving double bond, THEREFORE, the root WORD is .but.. There is a double bond between carbon 2 and 3 in the chain, therefore, the primary SUFFIX is 2-ene.
Thus, the IUPAC name of the GIVEN compound is
Root word + Primary suffix
But + 2-ene = But-2-ene


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