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What feature would you expect to see in the 1H NMR spectrum of B after subjectin

ID: 851769 • Letter: W

Question

What feature would you expect to see in the 1H NMR spectrum of B after subjecting A to the following reaction?

a) The signal for the methyl protons would integrate for only 2 hydrogens.

b) There would be only 4 aromatic protons at low field.

c) The signal for the methyl protons would be a doublet.

d) The signal for the protons on the benzylic carbon would be a doublet.

e) The signal for the methyl protons would be a triplet.

PLEASE EXPLAIN WHY.

a) The signal for the methyl protons would integrate for only 2 hydrogens.

What feature would you expect to see in the 1H NMR spectrum of B after subjecting A to the following reaction? a) The signal for the methyl protons would integrate for only 2 hydrogens. b) There would be only 4 aromatic protons at low field. c) The signal for the methyl protons would be a doublet. d) The signal for the protons on the benzylic carbon would be a doublet. e) The signal for the methyl protons would be a triplet. PLEASE EXPLAIN WHY.

Explanation / Answer

c) The signal for the methyl protons would be a doublet.

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