Which of the following is not an effective base for deprotonating a terminal alkyne?Select answer from the options belowNaOCH2CH3KNH2CH3LiNaHSave for LaterSubmit Answer
Question
Which of the following is not an effective base for deprotonating a terminal alkyne?Select answer from the options belowNaOCH2CH3KNH2CH3LiNaHSave for LaterSubmit Answer
Solution
The least effective base for deprotonating a terminal alkyne from the options provided is CH3Li.
Here's why:
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Sodium ethoxide (NaOCH2CH3) is a strong base and can deprotonate a terminal alkyne.
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Potassium amide (KNH2) is also a strong base and can deprotonate a terminal alkyne.
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Sodium hydride (NaH) is a very strong base and can easily deprotonate a terminal alkyne.
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However, methyl lithium (CH3Li) is not a strong enough base to deprotonate a terminal alkyne. It is a strong nucleophile, but not a strong base. Therefore, it is the least effective base for deprotonating a terminal alkyne among the options provided.
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