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Which of the following names are not cor...

Which of the following names are not correct for the given compound :
`underset(CHO)underset(|)(CH_(2))-underset(CHO)underset(|)(CH)-underset(CHO)underset(|)(CH_(2))`

A

3-Formyl pentane-1,5-dial

B

1,2,3-Triformylpropane

C

2-Formylbutane-1,4-dial

D

Propane-1,2,3-tricarbaldehyde

Text Solution

AI Generated Solution

The correct Answer is:
To determine which names are not correct for the given compound, we will analyze each proposed name based on IUPAC nomenclature rules. ### Step-by-Step Solution: 1. **Identify the Structure**: The compound has multiple aldehyde (CHO) functional groups and a carbon chain. The structure can be visualized as having a central chain with aldehyde groups attached. 2. **Determine the Longest Carbon Chain**: The longest continuous carbon chain that includes all functional groups is essential for naming. In this case, the longest chain consists of 5 carbons. 3. **Identify Functional Groups**: The compound has three aldehyde groups. According to IUPAC rules, aldehyde groups are indicated by the suffix "-al" or the prefix "formyl" when they are substituents. 4. **Naming the Compound**: - The correct name should reflect the longest chain and the position of the functional groups. - The longest chain is pentane (5 carbons), and since there are three aldehyde groups, the correct name should be "1,2,3-tricarbaldehyde" or "3-formylpentane-1,5-dial". 5. **Evaluate Each Proposed Name**: - **Option A: 3-formylpentane-1,5-dial**: This name is correct as it includes the longest chain and positions of the aldehyde groups. - **Option B: 1,2,3-triformylpropane**: This name is incorrect because it suggests a 3-carbon chain (propane) while the longest chain is 5 carbons. It should be "tricarbaldehyde" instead of "triformyl". - **Option C: 2-formylbutane-1,4-dial**: This name is incorrect because it implies a 4-carbon chain (butane) instead of the correct 5-carbon chain. It should be "pentane" instead of "butane". - **Option D: Propane-1,2,3-tricarbaldehyde**: This name is also incorrect for the same reason as option B; it should refer to the 5-carbon chain. 6. **Conclusion**: The names that are not correct for the compound are **Option B (1,2,3-triformylpropane)** and **Option C (2-formylbutane-1,4-dial)**. ### Final Answer: The incorrect names for the compound are **Option B and Option C**.
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The IUPAC name the compound CH_(3)-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH_(2)) is

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Knowledge Check

  • The IUPAC name of the compound underset(CN) underset(|) (CH_2) - underset(CN) underset(|)(CH ) - underset(CN)underset(|)(CH_2) is

    A
    1, 2, 3-tricyanopropane
    B
    3-cyanopentane-1, 5-dinitrile
    C
    1, 2, 3-cyanopropane
    D
    propanetrinitrile-1, 2, 3

  • Which of the following names is correct for underset(CHO)underset(|)(C)H_(2)-underset(CHO)underset(|)(C)H-underset(CHO)underset(|)(C)H_(2) ?

    A
    3-Formylpentane-1,3-dial
    B
    1,2,3-Triformylpropane
    C
    2-Formylmethylbutane-1,4-dial
    D
    Propane-1,2,3-tricarbaldehyde.

  • Correct name for the given compound CH_(3)-CH_(2)-underset(CH_(2)CH_(3))underset(|)(C)H-CH_(2)-underset(CH_(3))underset(|)(C)H-CH_(2)-CH_(3) is

    A
    3-ethyl-5-methylheptane
    B
    5-ethyl-3-methylheptane
    C
    1,1-diethyl-3-methylpentane
    D
    3-methyl-5,5-diethylpentane

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