Wilhelm McDermott
Jan 24, 2025
which action could produce a carbonyl group?
Which action could produce a carbonyl group?
a. Replacement of the -OH group of a carboxyl group with hydrogen
b. Addition of a thiol to a hydroxyl group
c. Addition of a hydroxyl group to a phosphate
d. Replacement of the nitrogen in an amine with oxygen
e. Addition of a sulfhydryl group to a carboxyl group
2 Answers
Unfortunately, this is a poorly worded question. Answer a is probably the best answer of the five given. However, replacing the OH of a COOH with an H to make an aldehyde does not actually create a carbonyl group. The carbonyl group, which is a C=O, is already present in the COOH. One could argue that the substitution of OH by H makes a carbonyl compound, an aldehyde, as opposed to a carbonyl group, but the difference is semantic because some people consider only aldehydes and ketones to be carbonyl compounds, while others consider compounds containing any functional group that includes the C=O, such as carboxylic acids, amides, esters, etc., to be carbonyl compounds.
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