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Nucleophilic Substitution in Alkyl Halides

Write SN2 m...

Question

Write $S N^{2}$ mechanism for conversion of methyl chloride to methyl alcohol.

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Solution

It is one step process. Bond breaking and bond formation takes place simultaneously. Hydroxide ion is the nucleophile and chloride ion is the leaving group.

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Q. Assertion :Tert-butyl methyl ether on treatment with HI at

100^{o} C

gives a mixture of methyl iodide and tert-butyl alcohol. Reason: This reaction occur via

S_{N} 2

Q. A mixture of two alcohols

3 -

- 1 -

2 -

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butanol, given chiefly

2 -

- 2 -

butene when dehydrated with acid.

2 -

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butene is converted into

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C. Write equation showing mechanism of conversions.

Q. Which of the following catalyst is used in the conversion of water gas and hydrogen to methyl alcohol?

Q. Assertion :In the following synthesis of 2-methyl pentane

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How are the following conversions carried out?

(i) Propene → Propan-2-ol

(ii) Benzyl chloride → Benzyl alcohol

(iii) Ethyl magnesium chloride → Propan-1-ol.

(iv) Methyl magnesium bromide → 2-Methylpropan-2-ol.

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Nucleophilic Substitution in Alkyl Halides

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