IIT JEE , AIEEE Forum - Chemistry , Organic Chemistry

nishant_delhi

Q. Give the IUPAC name of :

harsha_27

N-ethyl-3-chloro-3-methylpentanamide

here amide is the senior group and amide carbon will
be the terminal carbon of the parent chain ......and
chloro comes before methyl because its

alphabetically preferred ......thats all

nishant_delhi

Ur ans. is correct.Can u tell me wht does the N represent here & y u use 'an' after methylpent and wht it means.

harsha_27

here N represents that the group which we're going

to write after N is connected to Nitrogen of amide

.........suppose the compound is

CH3-CH2-C0-N(CH3)2 .....then the name will be

N,N-dimethylpropanamide.....

now these codes after the alk- group represents the type of

unsaturation the compound has ......suppose -an

represents saturation (no unsaturation) in the

compound .....means no double or triple

bond.......means all the carbons in the compound

are sp3 hybridised......-en represents double bond

b/w 2 carbons (if two double bonds then it is

-diene) in the molecule ....similarly -yne

indicates carbon carbon triple bond........now

understood?

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