Which of the following biphenyls is optically | vedclass

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(D) For a biphenyl derivative to be optically active,it must exhibit atropisomerism,which requires the presence of bulky substituents at the ortho pos

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(D) For a biphenyl derivative to be optically active,it must exhibit atropisomerism,which requires the presence of bulky substituents at the ortho positions of both phenyl rings to prevent free rotation around the central $C-C$ single bond.In option $D$,the molecule has bulky substituents ($Br$ and $I$) at all four ortho positions $(2, 2', 6, 6')$. This steric hindrance prevents the two phenyl rings from becoming coplanar,forcing them into a non-planar conformation that lacks a plane of symmetry and a center of inversion,thus making the molecule chiral and optically active.The other options lack sufficient ortho-substitution to prevent free rotation,allowing the molecules to adopt planar or symmetric conformations that are achiral.

$A$. Acetaldehyde,vinyl alcohol	$1$. Enantiomers
$B$. Eclipsed and staggered ethane	$2$. Tautomers
$C$. $(+)2$-butanol,$(-)2$-butanol	$3$. Chain isomers
$D$. Methyl-$n$-propylamine and diethylamine	$4$. Conformational isomers
	$5$. Metamers

Which of the following biphenyls is optically active?

Similar Questions

Identify the name of the method used for the three-dimensional representation of the molecule as follows:

Which of the following compounds can exist in two different stereoisomeric forms?

Match the following:
$A$. Acetaldehyde,vinyl alcohol $1$. Enantiomers
$B$. Eclipsed and staggered ethane $2$. Tautomers
$C$. $(+)2$-butanol,$(-)2$-butanol $3$. Chain isomers
$D$. Methyl-$n$-propylamine and diethylamine $4$. Conformational isomers
$5$. Metamers

Determine the number of optically active isomers for the given structure.

The absolute configuration of the given molecule is:

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