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The IUPAC name of CH(3)Ch(2)-underset...

The `IUPAC` name of
`CH_(3)Ch_(2)-underset(CH_(3))underset(|)overset(H)overset(|)(C)-underset(CH_(3))underset(|)overset(C_(4)H_(9))overset(|)(C)-CH_(3)`
is

A

(1) 3,4,4-trimethylheptane

B

(2) 3,4,4-triemethyloctane

C

(3) `2`-butyl-`2`-methyl-`3`-ethylbutane

D

(4) `2`-ethyl-`3,3`-dimethylheptane

Text Solution

Verified by Experts

The correct Answer is:
B
The compound is a branched alkane. To get the correct `IUPAC` name, we should write the complete structural formula.
`overset(1)(CH_(3))overset(2)(CH_(2))-underset(3,4,4-"Trimethyloctane")(underset(CH_(3))underset(|)overset(H)overset(|3)C-underset(CH_(3))underset(|)overset(overset5CH_(2)overset(6)CH_(2)overset(7)CH_(2)overset(8)CH_(3))overset(|4)C-CH_(3))`
The numbering shold be done from the side nearer to the side chains.
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write a IUPAC name H_(3)C-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-OH

CH_(3)-underset(CH_(3))underset(|)(C)=CH-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3)

Knowledge Check

  • The IUPAC name of following compound is: CH_(3)CH_(2) - underset(CH_(3))underset(|)overset(H)overset(|)(C) - underset(CH_(3))underset(|)overset(C_(4)H_(9))overset(|)(C) - CH_(3)

    A
    3, 4, 4-Trimethylheptane
    B
    3, 4, 4-Trimethyloctane
    C
    2-Butyl-2-methyl-3-ethylbutane
    D
    2-Ethyl-3, 3-dimethylheptane

  • IUPAC name of CH_3-underset(C_2H_5)underset(|)overset(H)overset(|)C-underset(CH_3)underset(|)overset(C_4H_9)overset(|)C-CH_3 is

    A
    2-Butyl-2-methyl-3-ethylbutane
    B
    2-Ethyl-3, 3-dimethylheptane
    C
    3, 4, 4-Trimethylheptane
    D
    3, 4, 4-Trimethyloctane

  • Given the IUPAC name of C_(2)H_(2)-underset(CH_(3))underset(|)overset(C(CH_(3))_(3))overset(|)C-CH_(2)-underset(CH_(3))underset(|)overset(Cl)overset(|)C-C_(2)H_(5)

    A
    3-chloro -3,5-dimethyl-5-t-butylheptane
    B
    3-chloro-5-ethyl-3, 5, 6, 6-tetramethyl heptane
    C
    5-chloro-2, 2, 3, 5-tetramethyl-3-ethylheptane
    D
    5-chloro-3, 5-dimethyl-3-t- butylheptane

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