Determine the Infared spectrum for the carbonyl stretch and mark other significant stretches in the IR spectrum provided below, for the following experiment.
Determine the Infared spectrum for the carbonyl stretch and mark other significant stretches in the IR spectrum provided below, for the following experiment.
Chapter1: Lewis Structures
Section: Chapter Questions
Problem 68EQ
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Question
Determine the Infared spectrum for the carbonyl stretch and mark other significant stretches in the IR spectrum provided below, for the following experiment.
Transcribed Image Text:95
90
85
80
75
70
55 -
50
45
40
35
2500
1000
Wavenumbers (cm-1)
% Transmittance
2972.12
2878.09
1705.80
1653.24
1506.79
1476.55
1364.97
1355.35
1274.55
1135.29
953.44
832.79
671.74
Transcribed Image Text:Experiment: Pinacol-Pinacolone (PP)
Title:
Pinacol Rearrangement. 2,3-Dimethyl-2,3-butanediol to 3,3-Dimethyl-2-butanone
Ref:
Hill, G. A.; Flosdorf, E. W. Organic Syntheses Collective Volume 1 (1941; 2nd Ed) p 462.
Purpose: Synthesize 3,3-dimethyl-2-butanone, A Pinacol-Pinacolone Rearrangement Example.
6Nsulfuric acid
steam distill
Reagent table:
Reagent
(source)
Mwt
mp °C
bp °C
mmol
equiv
density
volume
mass
pinacol
(Aldrich)
(98% anhydrous)
118.18 40-43
171-2
50.8
1.00
6.10 g
(739 torr)
5.08 g
3,3-dimethyl-
2-butanone
100.16
-50
106.2
50.8
1.00
0.80 g/mL 6.4 mL
90
1.76
30 mL
H2SO4 (6 N, 28%)
(Fisher)
Procedure:
Add oo 1 ml ofweter te the
tory funnel (bereeshee olemped on c
all ringotond) ond
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