328 3. Compound 3 gave the iH NMR spectrum shown in Figure 13.1-5. The molecular

Question

328 3. Compound 3 gave the iH NMR spectrum shown in Figure 13.1-5. The molecular formula compound 3 is C.Hizo 61.20 (3H) 83.10 1H) (hydroxy) 63.55 (1H) 83.75 (2H) Figure 13.1-5 H NMR spectrum of compound 3 SouRCE Reprinted with pennision of Aldrich Chemical. 4. Compound 4 gave the iH NMR spectrum shown in Figure 13.1.6. The molecular formula of compound 4 is C4Hso. 51.75 (3H) 84.85 (1H) Figure 13.1-6 H NMR spectrum of compound 4 Souko Reprinted with permission of Aldrich Chemical Experim 5. Cou TST

Explanation / Answer

Question 1:

There are 2 O given in molecular formula and if ketone or aldehyde group is present then there can not be 12 H

hence possibility of 2 OH groups and also only one peak for hydroxyl indicating they must be on same carbon.

3HC - C(OH)2 - CH2 - CH2 - CH3

3.55 3.1 3.75 1.70 1.20

Question 13:

The molecular formula C4H8O suggest presence of one double bond

3HC - CH (OH) - CH = CH2

1.75 2.65 4.95 4.85 4.0

Note: Below the structure of compound chemical shift values are given

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