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Answer the questions below based on the spectra Write a mechanism for the formation of semicarbazones.  Suggest a reason why the NH2 group depicted in the reaction scheme is the one used to form the semicarbazone and not the other NH2 group. Yes, the answer is resonance, but you really want to explain how resonance affects the reactivity of the non-reacting NH2 group.   Explain why the 2,4-dintrophenylhydrazone is colored and the semicarbazide is not. The reason should relate to the structure.

Answer the questions below based on the spectra Write a mechanism for the formation of semicarbazones.  Suggest a reason why the NH2 group depicted in the reaction scheme is the one used to form the semicarbazone and not the other NH2 group. Yes, the answer is resonance, but you really want to explain how resonance affects the reactivity of the non-reacting NH2 group.   Explain why the 2,4-dintrophenylhydrazone is colored and the semicarbazide is not. The reason should relate to the structure.

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Answer the questions below based on the spectra

  • Write a mechanism for the formation of semicarbazones. 
  • Suggest a reason why the NH2 group depicted in the reaction scheme is the one used to form the semicarbazone and not the other NH2 group. Yes, the answer is resonance, but you really want to explain how resonance affects the reactivity of the non-reacting NH2 group. 
  •  Explain why the 2,4-dintrophenylhydrazone is colored and the semicarbazide is not. The reason should relate to the structure.

 

  •  What would be produced if the 2,4-dinitrophenylhydrazone was prepared in the presence of NaBH3CN? 

 

1.00 11.4 11.3 11.2 11.1 11.0 10.9 10.8 10.7 10.6 10.5 10.4 10.3 10.2 10.1 10.0
Transcribed Image Text:1.00 11.4 11.3 11.2 11.1 11.0 10.9 10.8 10.7 10.6 10.5 10.4 10.3 10.2 10.1 10.0
0.89 3.00 8.4 8.3 8.2 8.1 8.0 7.9 7.8 77 7.6 7.5 70 7.4 7.3 7.2 7.1
Transcribed Image Text:0.89 3.00 8.4 8.3 8.2 8.1 8.0 7.9 7.8 77 7.6 7.5 70 7.4 7.3 7.2 7.1
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