Count the primary aromatic amines of molecular formula $C X_{8} H X_{11} N$ in which the $- NH X_{2}$ group is attached directly to a benzene ring. Count constitutional (positional) isomers only; no stereoisomers arise. How many such isomers are there?

Numerical answer type, tolerance 0.5.

Answer: 9

The ring carries

NH X_{2}

plus two carbon atoms as either one ethyl group or two methyl groups. Ethylanilines: ortho, meta, para = 3. Dimethylanilines (xylidines): 2,3-, 2,4-, 2,5-, 2,6-, 3,4- and 3,5- = 6. Total = 3 + 6 = 9; each gives a stable diazonium salt at 273-278 K.

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Count the primary aromatic amines of molecular formula CX8​HX11​N in which the −NHX2​ group is attached directly to a benzene ring. Count constitutional (positional) isomers only; no stereoisomers arise. How many such isomers are there?

Answer: 9

More questions on Diazonium salts: preparation and synthetic uses

Count the primary aromatic amines of molecular formula $C X_{8} H X_{11} N$ in which the $- NH X_{2}$ group is attached directly to a benzene ring. Count constitutional (positional) isomers only; no stereoisomers arise. How many such isomers are there?