The IUPAC name of the following compound is:
The IUPAC name of the following compound is:
Show Hint
- 4-Hydroxyhept-1-en-6-yne
- 4-Hydroxyhept-6-en-1-yne
- Hept-6-en-1-yn-4-ol
- Hept-1-en-6-yn-4-ol
The Correct Option is D
Approach Solution - 1
The problem asks for the IUPAC name of the given compound. To determine the correct name, we'll perform a step-by-step analysis based on IUPAC nomenclature rules:
- The longest carbon chain contains 7 carbon atoms, hence the parent name is "heptane."
- The compound contains both a double bond and a triple bond. According to IUPAC rules, the chain is numbered such that the multiple bond closest to the end receives the lowest possible number. Here, the numbering starts from the right to give the double bond position as 1 and the triple bond position as 6.
- Numbering the chain this way: CH2=CH-CH2-CH(OH)-CH2-C≡CH shows positions for double bond as 1 (en-) and triple bond as 6 (yn-).
- The hydroxyl group (OH) is taken as a substituent, and its location on the chain is at carbon 4 (4-ol).
Thus, the correct IUPAC name of the compound is "Hept-1-en-6-yn-4-ol."
Explanation of other options:
- 4-Hydroxyhept-1-en-6-yne: Incorrect as it does not correctly prioritize numbering for the double and triple bonds.
- 4-Hydroxyhept-6-en-1-yne: Incorrect placement of the double bond and triple bond numbering.
- Hept-6-en-1-yn-4-ol: Incorrect prioritization of the triple bond position over the double bond.
Approach Solution -2
To determine the IUPAC name of the given compound, we will follow standard nomenclature rules:
- Identify the longest carbon chain containing both the double bond and the triple bond. In this compound, the longest chain consists of 7 carbon atoms.
- Number the carbon chain such that the double bond gets the lowest possible number. In this case, numbering from the right gives the double bond a position of 1 and the triple bond a position of 6.
- Identify and number any substituents attached to the main chain. Here, a hydroxyl (OH) group is attached to the 4th carbon.
- Combine the components into the name, indicating the position of the functional groups and unsaturations:
The correct name is Hept-1-en-6-yn-4-ol.
Justification of options:
4-Hydroxyhept-1-en-6-yne
- - Incorrect: The hydroxyl group location is correct, but the numbering suggests a different structure.
4-Hydroxyhept-6-en-1-yne
- - Incorrect: This suggests numbering prioritizes the triple bond over the double bond.
Hept-6-en-1-yn-4-ol
- - Incorrect: The numbering places the double bond at a higher number, which is against IUPAC naming conventions.
Hept-1-en-6-yn-4-ol
- - Correct: This follows all IUPAC rules for correct numbering and substituent identification.
Top JEE Main Chemistry Questions
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- At equilibrium the concentrations of and in a sealed vessel at . What will be for the reaction
- Find out the major products from the following reactions
Cobalt chloride when dissolved in water forms pink colored complex $X$ which has octahedral geometry. This solution on treating with cone $HCl$ forms deep blue complex, $\underline{Y}$ which has a $\underline{Z}$ geometry $X, Y$ and $Z$, respectively, are
- The correct order of atomic radii is:
Top JEE Main Nomenclature Of Organic Compounds Questions
IUPAC name of \(K_2MnO_4\) is
- IUPAC Name of the compound
is - According to IUPAC system, the compound
- Given below are two statements:
Statement (I) : Aminobenzene and aniline are same organic compounds.
Statement (II) : Aminobenzene and aniline are different organic compounds.
In the light of the above statements, choose the most appropriate answer from the options given below: - IUPAC name of the following compound (P) is:
Top JEE Main Questions
- In a hydrogen like atom, when an electron jumps from the $M$ - shell to the $L$ - shell, the wavelength of emitted radiation is $\lambda$. If an electron jumps from $N$-shell to the $L$-shell, the wavelength of emitted radiation will be :
- Two masses $m$ and $\frac{m}{2}$ are connected at the two ends of a massless rigid rod of length $l$. The rod is suspended by a thin wire of torsional constant $k$ at the centre of mass of the rod-mass system(see figure). Because of torsional constant $k$, the restoring torque is $\tau =k\theta$ for angular displacement $\theta$. If the rod is rota ted by $\theta_0$ and released, the tension in it when it passes through its mean position will be:
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- The value of is
- The number of terms of an is even. The sum of the odd terms is and of the even terms is . The last term exceeds the first by . Then the number of terms in the series is ______.