미해결 질문
The following compound has two stereoisomers. One isomer reacts with acetate more than a billion times faster than the other. Draw the structure of that isomer and write a plausible reaction mechanism.
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객관식
Which of the following compounds should undergo hydrolysis faster at neutral pH? Write mechanism for the hydrolysis of that compound.
A
B
C
D
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검증된 단계별 안내1
Identify the functional groups present in each compound. The compounds shown are esters, which can undergo hydrolysis.
Consider the electronic effects of substituents on the aromatic ring. Electron-withdrawing groups can stabilize the transition state, potentially increasing the rate of hydrolysis.
Analyze the structures: The first compound has a phenyl group, the second and third have pyridine rings, and the fourth has a carboxylate group attached to the aromatic ring.
Evaluate the effect of the pyridine nitrogen in the second and third compounds. The nitrogen can act as an electron-withdrawing group, potentially increasing the rate of hydrolysis compared to the phenyl group.
Consider the carboxylate group in the fourth compound. It is a strong electron-withdrawing group, which can significantly increase the rate of hydrolysis by stabilizing the transition state.
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