In a proton NMR, the signal for the OH proton is lost due to exchange with acidi

Question

In a proton NMR, the signal for the OH proton is lost due to exchange with acidic impurities. Will generally be upfield from the corresponding alkyl signal. Covers a broader chemical shift range than a phenol OH. Is generally unsplit by adjacent protons. what is the major organic product obtained from the following reaction? which of the following functional groups does not contain a carbonyl group? ester carboxylic acid phenol ketone which of the following is the best description of the mechanism of the reaction between a ketone and an amine to form an amine? nucleophilic addition followed by elimination elimination followed by nucleophilic addition electrophilic addition followed by rearrangement concerted bimolecular substitution

Explanation / Answer

1. An -OH signal in proton NMR is,

a. Lost due to exchange with acidic impurities

2. The major organic product formed in the reaction is,

b. 2

3. The functional goup devoid of C=O group is,

c. phenol

4. The reaction between carbonyl and amine is best described by,

a. nucelophilic addition followed by elimination

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