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Author Question: The most frequent method for preparing terminal alkynes using an elimination reaction involves ... (Read 55 times)

Austinleez3

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on: Feb 17, 2022

Question 1

Select the expected major product of the reaction sequence shown.



◦ 3-methylhexyne
◦ 2-bromo-3-methylhexyne
◦ 1-bromo-3-methylhexybe
◦ 3-methyl-1-hexyne
◦ 3-methyl-2-hexyne

Question 2

The most frequent method for preparing terminal alkynes using an elimination reaction involves dissolving sodium amide (NaNH2) in liquid ammonia (NH3).  Which of the following statements offers the best explanation for the above statement?
◦ Steric hindrance favors preparation of the less substituted terminal alkyne.
◦ Sodium amide is required because it increases the stability of the terminal alkyne, stabilizing the intermediate.
◦ Sodium amide irreversibly deprotonates the terminal alkyne, driving the elimination reaction to completion.
◦ Sodium amide deprotonates internal alkynes, which begins the series of reactions necessary reactions to generate a terminal alkyne.
◦ This provides an environment in which terminal alkynes are more stable than the internal alkynes and therefore the favored product.
Organic Chemistry ¦ Klein ¦ 4th Edition
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Marked as best answer by Austinleez3 on Feb 17, 2022

gcurrens

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Reply #1 on: Feb 17, 2022
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Austinleez3

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Reply 2 on: Feb 17, 2022
Great answer, keep it coming :)

Joy Chen

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Reply 3 on: Yesterday
Excellent

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