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The reagent needed to convert 2-butyne to trans-2-butene is ________.


A) H2/Pt
B) H2/Lindlar's catalyst
C) Li/NH3
D) Na/NH3
E) C or D

F) A) and B)
G) B) and C)

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Which of the following is the final and major product of this reaction? Which of the following is the final and major product of this reaction? A) I B) II C) III D) IV E) V Which of the following is the final and major product of this reaction? A) I B) II C) III D) IV E) V


A) I
B) II
C) III
D) IV
E) V

F) A) and D)
G) A) and C)

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Complete the following reaction. Complete the following reaction.

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Provide the structure of the major organic product of the following reaction. Provide the structure of the major organic product of the following reaction.

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Which of the following improperly describes the physical properties of an alkyne?


A) relatively nonpolar
B) nearly insoluble in water
C) less dense than water
D) insoluble in most organic solvents

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

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Which of the following are enol forms of 2-butanone, Which of the following are enol forms of 2-butanone, A) B) C) D) E)


A) Which of the following are enol forms of 2-butanone, A) B) C) D) E)
B) Which of the following are enol forms of 2-butanone, A) B) C) D) E)
C) Which of the following are enol forms of 2-butanone, A) B) C) D) E)
D) Which of the following are enol forms of 2-butanone, A) B) C) D) E)
E) Which of the following are enol forms of 2-butanone, A) B) C) D) E)

F) B) and E)
G) B) and D)

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In the reduction of alkynes using sodium in liquid ammonia, which of the species below is not an intermediate in the commonly accepted mechanism?


A) vinyl anion
B) vinyl radical
C) radical anion
D) vinyl cation

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

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Give the best reagents for the reaction. Give the best reagents for the reaction. A) H<sub>2</sub>, Pd B) 1) LiAlH<sub>4</sub>, 2. H<sub>3</sub>O<sup>+</sup> C) 1) NaBH<sub>4</sub>, 2. H<sub>3</sub>O<sup>+</sup> D) H<sub>2</sub>, Lindlar catalyst E) Na, NH<sub>3</sub>


A) H2, Pd
B) 1) LiAlH4, 2. H3O+
C) 1) NaBH4, 2. H3O+
D) H2, Lindlar catalyst
E) Na, NH3

F) A) and B)
G) B) and C)

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Why are terminal alkynes more acidic than other hydrocarbons?

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The carbanion which results upon deproto...

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What is/are the major organic product(s) of the following reaction? What is/are the major organic product(s) of the following reaction? A) CH<sub>2</sub> <sub> </sub> CH<sub>2</sub> + HC CH B) CH<sub>3</sub>CH<sub>2</sub>C CH C) HC CBr D) HC CCH<sub>2</sub>CH<sub>2</sub>Br E) CH<sub>3</sub>C CCH<sub>3</sub>


A) CH2 What is/are the major organic product(s) of the following reaction? A) CH<sub>2</sub> <sub> </sub> CH<sub>2</sub> + HC CH B) CH<sub>3</sub>CH<sub>2</sub>C CH C) HC CBr D) HC CCH<sub>2</sub>CH<sub>2</sub>Br E) CH<sub>3</sub>C CCH<sub>3</sub> CH2 + HC What is/are the major organic product(s) of the following reaction? A) CH<sub>2</sub> <sub> </sub> CH<sub>2</sub> + HC CH B) CH<sub>3</sub>CH<sub>2</sub>C CH C) HC CBr D) HC CCH<sub>2</sub>CH<sub>2</sub>Br E) CH<sub>3</sub>C CCH<sub>3</sub> CH
B) CH3CH2C What is/are the major organic product(s) of the following reaction? A) CH<sub>2</sub> <sub> </sub> CH<sub>2</sub> + HC CH B) CH<sub>3</sub>CH<sub>2</sub>C CH C) HC CBr D) HC CCH<sub>2</sub>CH<sub>2</sub>Br E) CH<sub>3</sub>C CCH<sub>3</sub> CH
C) HC What is/are the major organic product(s) of the following reaction? A) CH<sub>2</sub> <sub> </sub> CH<sub>2</sub> + HC CH B) CH<sub>3</sub>CH<sub>2</sub>C CH C) HC CBr D) HC CCH<sub>2</sub>CH<sub>2</sub>Br E) CH<sub>3</sub>C CCH<sub>3</sub> CBr
D) HC What is/are the major organic product(s) of the following reaction? A) CH<sub>2</sub> <sub> </sub> CH<sub>2</sub> + HC CH B) CH<sub>3</sub>CH<sub>2</sub>C CH C) HC CBr D) HC CCH<sub>2</sub>CH<sub>2</sub>Br E) CH<sub>3</sub>C CCH<sub>3</sub> CCH2CH2Br
E) CH3C What is/are the major organic product(s) of the following reaction? A) CH<sub>2</sub> <sub> </sub> CH<sub>2</sub> + HC CH B) CH<sub>3</sub>CH<sub>2</sub>C CH C) HC CBr D) HC CCH<sub>2</sub>CH<sub>2</sub>Br E) CH<sub>3</sub>C CCH<sub>3</sub> CCH3

F) A) and E)
G) C) and E)

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Provide the structure of all distinct terminal alkynes with a molecular formula of C6H10.

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Name the following compound. Name the following compound.

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cis-4,5-dimethyl-4-h...

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Give the major organic product for the reaction. Give the major organic product for the reaction. A) CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>3</sub> B) C) D) E)


A) CH3CH2CH2CH2CH3
B) Give the major organic product for the reaction. A) CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>3</sub> B) C) D) E)
C) Give the major organic product for the reaction. A) CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>3</sub> B) C) D) E)
D) Give the major organic product for the reaction. A) CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>3</sub> B) C) D) E)
E) Give the major organic product for the reaction. A) CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>3</sub> B) C) D) E)

F) A) and B)
G) B) and C)

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Provide the structure of the major organic product of the following reaction. Provide the structure of the major organic product of the following reaction.

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Provide the structure of the major organic product of the following reaction. Provide the structure of the major organic product of the following reaction.

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Give the IUPAC name for (CH3)2C(CH2CH3)CCCH(CH3)2.

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2,5,5-trim...

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Give the best reagents for the reaction. Give the best reagents for the reaction. A) H<sub>2</sub>SO<sub>4</sub>, HgSO<sub>4</sub>, HgSO<sub>4</sub> B) 1) disiamylborane, 2. HO<sup>-</sup>, H<sub>2</sub>O, H<sub>2</sub>O<sub>2</sub> C) K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>, H<sup>+</sup> D) NaOCl E) H<sub>2</sub>, Pd


A) H2SO4, HgSO4, HgSO4
B) 1) disiamylborane, 2. HO-, H2O, H2O2
C) K2Cr2O7, H+
D) NaOCl
E) H2, Pd

F) A) and B)
G) B) and E)

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Provide the major organic product of the following reaction sequence. Provide the major organic product of the following reaction sequence.

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The carbon-carbon triple bond of an alkyne is composed of ________.


A) three σ bonds
B) two σ bonds and one π bond
C) one σ bond and two π bonds
D) three π bonds

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

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In the addition of hydrogen bromide to alkynes in the absence of peroxides, which of the following species is believed to be an intermediate?


A) vinyl anion
B) vinyl cation
C) vinyl radical
D) carbene
E) bromonium ion

F) A) and E)
G) A) and B)

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