What is the- purpose of adding the sodium methodise to the (staring material) in
ID: 953816 • Letter: W
Question
What is the- purpose of adding the sodium methodise to the (staring material) in the above reaction (# 14)? lt removes the bromine from ethyl bromide to give a carnation. It removes the phenolic proton to give the reactive peroxide ion. It removes the amide proton to give a reactive carbanion It removes the amide proton to give a reactive corporation. What side product will form in the above reaction if an excess of sodium methoxide is used ? What is the name of the process in which a solvent is heated at its boiling point for an extended length of time with no loss of solvent? What should be the splitting pattern for the indicated hydrogens in the proton NMR of the following? At what chemical shift should the signal for the indicated hydrogens occur? What i, the normal chemical shift for aromatic hydrogem?Explanation / Answer
15. The purpose of addition of sodium methoxide to p-acetamidophenol is,
b. It removes the phenolic proton to give the reactive phenoxide ion
16. The side product formed If excess of sodium methoxide is used,
c. CH3-CH2-O-CH3
17. The process where solvent is heated at extended length of time without loss of any solvent is,
a. reflux
18. The indicated proton should appear as,
d. triplet
CH2 is attached to another CH2 which has two hydrogens on it. So the splitting would be 2+1 = 3, a triplet
19. The said protons would give a signal at,
d. 4.7 ppm
20. chemical shift for aromatic hydrogens,
a. 7-8 ppm
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