k* КОН, МеОН 0 °C, 1 h RT, 1 h 0 °C, 12 h MeCOCI (3 equiv) K* МеОн (2.4 М) 0 °C, 30 min Room Temp., 2 h Reflux, 12 h 1) Mechanism for both reactions. 2) In the first step, why does the base attack the alpha hydrogen of CH3 on pyruvic acid? And why should the reaction be performed at 0 °C? 3) In the 2nd step why does HCl attack the carbonyl closer to the hydroxyl group? (Resonance stabilization?)
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Infrared (IR) or vibrational spectroscopy is a method used for analyzing the particle's vibratory transformations. This is one of the very popular spectroscopic approaches employed by inorganic as well as organic laboratories because it is helpful in evaluating and distinguishing the frameworks of the molecules. The infra-red spectroscopy process or procedure is carried out using a tool called an infrared spectrometer to obtain an infrared spectral (or spectrophotometer).
![k*
КОН, МеОН
HO
0 °C, 1 h
RT, 1 h
0 °C, 12 h
MeCOCI (3 equiv)
K*
MeOH (2.4 M)
0 °C, 30 min
Room Temp., 2 h
Reflux, 12 h
1) Mechanism for both reactions.
2) In the first step, why does the base
attack the alpha hydrogen of CH3 on
pyruvic acid? And why should the reaction
be performed at 0 °C?
3) In the 2nd step why does HCl attack the
carbonyl closer to the hydroxyl group?
(Resonance stabilization?)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa8064af7-1c57-49a0-89c4-5119912d40a3%2F651d649b-8d6a-466e-a910-615e876655c1%2Fgw5tqmj_processed.jpeg&w=3840&q=75)
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