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Exam 7: Alkynes

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Question 21

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What is IUPAC name of the following compound?

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Question 22

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The following species is the conjugate base of _________________.

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Question 23

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How many alkynes are there with the molecular formula C₆H₁₀?

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction?

What is the common name of the following compound? (Note: The grey balls indicate carbon atoms while the white ones indicate hydrogen atoms.) ​

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction? $\mathrm { CH } _ { 3 } - \mathrm { C } \equiv \mathrm { C } - \mathrm { CH } _ { 3 } \stackrel { 2 \mathrm {~mol} \mathrm { HBr } } { \longrightarrow }$

The key intermediate in the following reaction would be a vinylic carbocation. $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\mathrm{Br}$ $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$ | $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2}-\mathrm{C} \equiv \mathrm{C}-\mathrm{H}$$\underset{\mathrm{CH}_{3} \mathrm{COOH}}{\stackrel{\mathrm{HBr}}{\longrightarrow}}$$\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2}-\mathrm{C}=\mathrm{CH}_{2}$

What is the IUPAC name of the following compound? (CH₃) ₂CHCH₂−C≡C−CH(CH₃) ₂

What is the major organic product obtained from the following reaction?

The following species is referred to as a(an)_________________.

The triple bond in ethyne is made up of two π bonds, each formed by lateral overlap of two p orbitals, and a σ bond formed by end-on overlap of two sp hybrid orbitals.

What is the major organic product obtained from the following reaction? $\stackrel{2 \mathrm{~mol} \mathrm{HBr}}{\longrightarrow}$

Approximately how long is a carbon-carbon triple bond of an alkyne?

What is the IUPAC name for the following compound?

The IUPAC name for the following compound is 2,5-dimethyl-4-ethyl-3-hexene.

Outline how one might achieve the following transformation, showing reagents and the isolated intermediates in the synthetic scheme.