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Exam 7: Alkynes

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Question 21

True/False

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

A) True
B) False

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Question 22

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

A) 1
B) 2
C) 3
D) 4

E) B) and C)
F) A) and D)

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Question 23

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

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

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?

How many alkynes are there with the molecular formula C₆H₁₀?

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

The following species is the conjugate base of _________________.

What is the IUPAC name for the following compound?

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

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

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.

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

What is IUPAC name of the following compound?