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Question

Primary amine on heating with CS2 followed by an excess of mercuric chloride gives isothiocyanate. The reaction is called:

A
Hofmann mustard oil reaction
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B
Perkin reaction
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C
Fries reaction
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D
Diels Alder reaction
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Solution

The correct option is B Hofmann mustard oil reaction
Preparation of alkyl isothiocyanates by heating together a primary amine, mercuric chloride, and carbon disulfide is termed as Hofmann mustard oil reaction.
alkyl isothiocyanates have a smell like that of mustard oil
So, it is called as Hofmann mustard oil reaction

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