Consider the following statements:
$(1)$ Bridgehead halides are inert towards both $S_{N^1}$ and $S_{N^2}$ reactions (until one of the ring size is an eight-membered ring).
$(2)$ The first step in both $S_{N^1}$ and $E_1$ reactions is the same.
$(3)$ $S_{N^2}$ reactions proceed with total retention of configuration.
$(4)$ $E_2$ eliminations are favored by the use of a solvent of low polarity and a high concentration of a strong base.
Which of the above statements are correct?
$(1)$ Bridgehead halides are inert towards both $S_{N^1}$ and $S_{N^2}$ reactions (until one of the ring size is an eight-membered ring).
$(2)$ The first step in both $S_{N^1}$ and $E_1$ reactions is the same.
$(3)$ $S_{N^2}$ reactions proceed with total retention of configuration.
$(4)$ $E_2$ eliminations are favored by the use of a solvent of low polarity and a high concentration of a strong base.
Which of the above statements are correct?
- A$1, 2$ and $4$
- B$1$ and $3$
- C$2, 3$ and $4$
- D$1, 2, 3$ and $4$
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Similar Questions
Match the reactions given in Column-$I$ with their names in Column-$II$:
Column-$I$ (Reactants) Column-$II$ (Name) $A$. $R-X + NaI \xrightarrow{\text{dry acetone}} R-I + NaX$ $i$. Electrophilic addition $B$. $H_3C-Br + AgF \to H_3C-F + AgBr$ $ii$. Finkelstein reaction $C$. $H_3C-CH_3 + Cl_2 \xrightarrow{hv} H_3C-CH_2Cl + HCl$ $iii$. Swarts reaction $D$. $CH_2=CH_2 + Br_2 \to BrCH_2-CH_2Br$ $iv$. Free radical substitution
| Column-$I$ (Reactants) | Column-$II$ (Name) |
| $A$. $R-X + NaI \xrightarrow{\text{dry acetone}} R-I + NaX$ | $i$. Electrophilic addition |
| $B$. $H_3C-Br + AgF \to H_3C-F + AgBr$ | $ii$. Finkelstein reaction |
| $C$. $H_3C-CH_3 + Cl_2 \xrightarrow{hv} H_3C-CH_2Cl + HCl$ | $iii$. Swarts reaction |
| $D$. $CH_2=CH_2 + Br_2 \to BrCH_2-CH_2Br$ | $iv$. Free radical substitution |
Medium
View SolutionAssertion : Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene.
Reason : Alkyl halides are less reactive than acyl halides.
Reason : Alkyl halides are less reactive than acyl halides.
Complete the following reactions:
$(1)$ $1$-Chloropropane $\xrightarrow[{KOH}]{{\text{ethanol}}} (B)$ $\xrightarrow[{CCl_4}]{{Br_2}} (C)$
$(2)$ Ethane $\xrightarrow[{hv}]{{Cl_2}} (B)$ $\xrightarrow[{Na, \text{ether}}]{} (C)$
$(1)$ $1$-Chloropropane $\xrightarrow[{KOH}]{{\text{ethanol}}} (B)$ $\xrightarrow[{CCl_4}]{{Br_2}} (C)$
$(2)$ Ethane $\xrightarrow[{hv}]{{Cl_2}} (B)$ $\xrightarrow[{Na, \text{ether}}]{} (C)$
Medium
View SolutionIn which of the following compounds does the carbon atom attached to the halogen possess $sp^2$ hybridization?
Easy
View SolutionProvide the chemical reactions for the following conversions:
$1$. $2$-bromopropane and $1$-bromopropane from propene.
$2$. $2$-bromopropane from $1$-bromopropane.
$1$. $2$-bromopropane and $1$-bromopropane from propene.
$2$. $2$-bromopropane from $1$-bromopropane.
Difficult
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