Which of the following compounds is not chira | vedclass

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Question

(A) compound is chiral if it contains at least one chiral carbon atom (a carbon atom bonded to four different groups).$1-$chloropentane: $CH_2(Cl)-CH_

Vedclass · Accepted Answer

$1-$chloropentane

Vedclass · Answer

(A) compound is chiral if it contains at least one chiral carbon atom (a carbon atom bonded to four different groups).$1-$chloropentane: $CH_2(Cl)-CH_2-CH_2-CH_2-CH_3$. The carbon atom bonded to chlorine is attached to two identical hydrogen atoms,so it is achiral.$2-$chloropentane: $CH_3-CH(Cl)-CH_2-CH_2-CH_3$. The $C-2$ atom is bonded to $-H, -Cl, -CH_3, 	ext{ and } -CH_2CH_2CH_3$. Since all four groups are different,it is chiral.$1-$chloro$-2-$methylpentane: $CH_2(Cl)-CH(CH_3)-CH_2-CH_2-CH_3$. The $C-2$ atom is bonded to $-H, -CH_3, -CH_2Cl, 	ext{ and } -CH_2CH_2CH_3$. Since all four groups are different,it is chiral.$3-$chloro$-2-$methylpentane: $CH_3-CH(CH_3)-CH(Cl)-CH_2-CH_3$. The $C-3$ atom is bonded to $-H, -Cl, -CH(CH_3)_2, 	ext{ and } -CH_2CH_3$. Since all four groups are different,it is chiral.Therefore,$1-$chloropentane is the only achiral compound.

Column-$(I)$	Column-$(II)$
$(A)$ $C_2H_5-C(CH_3)(OH)-H$	$(p)$ $Cl-C(Br)(I)-H$
$(B)$ $Br-C(Cl)(I)-H$	$(q)$ $OH-C(CH_3)(C_2H_5)-H$
	$(r)$ $H_5C_2-C(OH)(CH_3)-H$
	$(s)$ $Cl-C(I)(Br)-H$

Which of the following compounds is not chiral?

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Find the enantiomers of the structures in Column-$(I)$ from Column-$(II)$.
Column-$(I)$ Column-$(II)$
$(A)$ $C_2H_5-C(CH_3)(OH)-H$ $(p)$ $Cl-C(Br)(I)-H$
$(B)$ $Br-C(Cl)(I)-H$ $(q)$ $OH-C(CH_3)(C_2H_5)-H$
$(r)$ $H_5C_2-C(OH)(CH_3)-H$
$(s)$ $Cl-C(I)(Br)-H$

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