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.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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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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