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Chapter 7: Q44P (page 315)

Which of the following names are correct? Correct those that are not correct.

a. 4-heptyne

b. 2-ethyl-3-hexyne

c. 4-chloro-2-pentyne

d. 2,3-dimethyl-5-octyne

e. 4,4-dimethyl-2-pentyne

f. 2,5-dimethyl-3-hexyne

Short Answer

Expert verified

c, e and f are correct.

Step by step solution

01

Step1: Rules for writing the nomenclature of alkyne.

The systematic name of an alkyne is generated by substituting "yne" for the "ane" in the alkane nomenclature.

  • The longest continuous chain containing the carbon鈥揷arbon triple bond is numbered in the direction that provides the functional group suffix as low a number as possible, similar to how compounds with other functional groups are designated.
  • The alkyne is classified as a terminal alkyne if the triple bond lies at the end of the chain. Internal alkynes are alkynes that have triple bonds elsewhere in the chain.

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Most popular questions from this chapter

Describe the alkyne you would start with and the reagents you would use if you wanted to Synthesize

a. Pentane. b. Cis-2-butene. c. trans-2-pentene. d. 1-hexene.

For each of the following alkynes, draw the products obtained from (1) the acid-catalyzed addition of water

(mercuric ion is added for part a) and from (2) hydroboration鈥搊xidation:

a. 1-butyne b. 2-butyne c. 2-pentyne

Only one alkyne forms an aldehyde when it undergoes the mercuric-ion-catalyzed addition of water. Identify the alkyne.

How could the following compounds be synthesized from acetylene?

Name the following:
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