Exam 7: Alkynes

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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\quadBr\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 | CH3CH2CH2CH2−C≡C−H\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2}-\mathrm{C} \equiv \mathrm{C}-\mathrm{H}⟶HBrCH3COOH\underset{\mathrm{CH}_{3} \mathrm{COOH}}{\stackrel{\mathrm{HBr}}{\longrightarrow}}CH3CH2CH2CH2−C=CH2\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2}-\mathrm{C}=\mathrm{CH}_{2}

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

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

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

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

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

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

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

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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.

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

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

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

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

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What is the IUPAC name for the following compound? What is the IUPAC name for the following compound?

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What is IUPAC name of the following compound? What is IUPAC name of the following compound?

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The following species is the conjugate base of _________________. The following species is the conjugate base of _________________.

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

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How many alkynes are there with the molecular formula C6H10?

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

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What is the major organic product obtained from the following reaction? CH3−C≡C−CH3⟶2 molHBr\mathrm { CH } _ { 3 } - \mathrm { C } \equiv \mathrm { C } - \mathrm { CH } _ { 3 } \stackrel { 2 \mathrm {~mol} \mathrm { HBr } } { \longrightarrow }

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