1.

has correct IUPAC name as :

Answer»

3-Carbamoylbenzene-1-carbonitrile
3-Cyanobenzene-1-carboxamide
3-Cyanobenzamide
3-Aminocarbonylcyanobenzene

Solution :(1)`-oversetoverset(O)(||)C-NH_2`, when attached to a ring, it is NAMED as carboxamide.
(2)`-oversetoverser(O)(||)C-NH_2` has HIGHER PRIORITY than -C=N
(3)-C=N has prefix cyano


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