Question

Write the IUPAC name of the compound..
NH2-CH2-CH2-CH=CH2

Answer 1

IUPAC name of the compound $NH_2-CH_2-CH_2-CH=CH_2$ is but-3-en 1-amine.

Explanation:

The basic rules for naming of organic compounds are :

First select the longest possible carbon chain. The longest possible carbon chain should include the carbons of double or triple bonds or functional group.For the number of carbon atom, we add prefix as 'meth' for 1, 'eth' for 2, 'prop' for 3, 'but' for 4, 'pent' for 5, 'hex' for 6, 'sept' for 7, 'oct' for 8, 'nona' for 9 and 'deca' for 10.

The naming of alkane is done by adding the suffix -ane, alkene by adding the suffix -ene, alkyne by adding the suffix -yne and ketones by adding the suffix -one and amine for $-NH_2$

The numbering is done in such a way that the carbon containing the functional group gets the lowest number.While writing the name, the word root is given first , followed by the position of carbon containing the functional group followed by the suffix.

Thus IUPAC name of $NH_2-CH_2-CH_2-CH=CH_2$ is but-3-en 1 -amine.

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