Single Choice

Which of the following halides will be most reactive in $${ SN }^{ 2 }$$ reaction and $${ SN }^{ 1 }$$ reaction, respectively ?

A(I), (II)
B(II),(I)
C(I),(III)
Correct Answer
D(III), (I)

Solution

(I)$$\Rightarrow \ 1^{o}$$ allylic halide and less steric hindrance, hence $$SN^2$$.
(iii) $$\Rightarrow \ 3^{o}$$ allylic halide , most stable carbonium ion and hence $$SN^1$$.
Option (C) is correct.

SIMILAR QUESTIONS

Haloalkanes and Haloarenes

Which of the following is not stereospecific?

Haloalkanes and Haloarenes

Write $$SN^1$$ mechanism for the hydrolysis of tert-butyl bromide.

Haloalkanes and Haloarenes

Explain $${ S }_{ N }{1 }$$ mechanism with an example.

Haloalkanes and Haloarenes

$$S_{N}1$$ reactions are accompanied by racemization in optically active alkyl halides. Why?

Haloalkanes and Haloarenes

In a nucleophilic substitution reaction: $$R-Br+Cl^-\xrightarrow{DMF}R-Cl+Br^-$$ Which one of the following undergoes complete inversion of configuration?

Haloalkanes and Haloarenes

Which statement is correct about the above reaction?

Haloalkanes and Haloarenes

Which statement is correct about the following reaction?

Haloalkanes and Haloarenes

(-)-1-chloro-1-phenylethane in toluene racemises slowly in the presence of small amount of $$Sb{Cl}_{5}$$, due to the formation of:

Haloalkanes and Haloarenes

Sec-Butyl alcohol will undergo alkaline hydrolysis in the polar solvent by:

Haloalkanes and Haloarenes

Which of the following gives $$SN^{1}$$ reaction?

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