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 \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-{{N}_{3}}\xrightarrow[-{{N}_{2}}]{\Delta }R-N=O\] (b) Lossen reaction \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\underset{H}{\mathop{\underset{|}{\mathop{N}}\,}}\,-OH\xrightarrow[Base]{TsCl}R-NCO\] (c) Schmidt reaction \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-OH\xrightarrow[{{H}_{2}}S{{O}_{4}}]{Na{{N}_{3}}}R-N{{H}_{2}}\] \[+\,{{N}_{2}}+C{{O}_{2}}\] (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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