A) Curtius reaction
B) Lossen reaction
C) Schmidt reaction
D) Hofmann reaction
Correct Answer: C
Solution :
Key Idea: Define all reactions to find correct answer [a] Curtius reaction \[R-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-{{N}_{3}}\xrightarrow[-{{N}_{2}}]{\Delta }R-N=O\] [b] Lossen reaction \[R-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-\underset{\begin{smallmatrix} | \\ H \end{smallmatrix}}{\mathop{N}}\,-OH\xrightarrow[Base]{TsCl}R-NCO\] [c] Schmidt reaction \[R-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-OH\xrightarrow[{{H}_{2}}S{{O}_{4}}]{Na{{N}_{3}}}R-N{{H}_{2}}\] \[+{{N}_{2}}+C{{O}_{2}}\] [d] Hofmann reaction \[R-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-N{{H}_{2}}\xrightarrow[-C{{O}_{2}}]{NaOH}RN{{H}_{2}}\] \[\therefore \] [c] is correct answer.
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