magine that you were given an undented aldehyde and performed another Wittig reaction in lab. Use the given data to answer the questions below and identify your original aldehyde. 8 i R H 5 (C6H5)3P- 6 A B Below is shown the 'H spectrum for the pure alkene product of this experiment. Interpret the signals to identify "R" by assigning each hydrogen by chemical shift, multiplicity (splitting), integration, and any other significant features. 5 NaOH PPM R H + (C6H5)3PO 2 6 (a) Label which proton in the product above corresponds to each signal A and B. Explain your assignme and what this tells you about the "R" group.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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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Imagine that you were given an unidentified aldehyde and performed another Wittig reaction in
lab. Use the given data to answer the questions below and identify your original aldehyde.
8
5
R
A
H
7
+
15 1
C/O
(C6H5)3P-
Below is shown the ¹H spectrum for the pure alkene product of this experiment. Interpret the
signals to identify "R" by assigning each hydrogen by chemical shift, multiplicity (splitting),
integration, and any other significant features.
6
A B
-5
NaOH
4
PPM
(b) One possible alkene product is shown in the
reaction above. Draw the other alkene product
R
3
H
2
+ (C6H5)3PO
2
1
6
1
(a) Label which proton in the product above corresponds to each signal A and B. Explain your assignment
and what this tells you about the "R" group.
(c) What was your aldehyde starting material?
(What is "R"?)
1
Transcribed Image Text:Imagine that you were given an unidentified aldehyde and performed another Wittig reaction in lab. Use the given data to answer the questions below and identify your original aldehyde. 8 5 R A H 7 + 15 1 C/O (C6H5)3P- Below is shown the ¹H spectrum for the pure alkene product of this experiment. Interpret the signals to identify "R" by assigning each hydrogen by chemical shift, multiplicity (splitting), integration, and any other significant features. 6 A B -5 NaOH 4 PPM (b) One possible alkene product is shown in the reaction above. Draw the other alkene product R 3 H 2 + (C6H5)3PO 2 1 6 1 (a) Label which proton in the product above corresponds to each signal A and B. Explain your assignment and what this tells you about the "R" group. (c) What was your aldehyde starting material? (What is "R"?) 1
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