A) alkyl cyanide
B) alkyl isothiocyanate
C) alkyl cyanate
D) carbyl amine
Correct Answer: B
Solution :
\[RN{{H}_{2}}+C{{S}_{2}}+HgC{{l}_{2}}\xrightarrow{{}}\underset{\begin{smallmatrix} Smell\text{ }of\text{ }mustard\text{ }oil \\ Alkyl\text{ }isothiocyante \end{smallmatrix}}{\mathop{R-N==C==S}}\,\] \[+2HCl+HgS\] This reaction is given by\[1{}^\circ \]amines only and is used as test for primary amines. This is called Hofmann mustard oil.
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