Chapter 7.2: Nomenclature of Alkynes

Question 1

How do you name an alkyne with more than one triple bond?

Answer 1

o If a hydrocarbon chain contains more than one triple bond, we use the infixes -adiyn-, -atriyn-, and so forth

Question 2

How are common names for alkynes derived?

Answer 2

o Common names for alkynes are derived by prefixing the names of substituents on the carbon-carbon triple bond to the word acetylene

Question 3

Define terminal alkynes

Answer 3

an alkyne in which the triple bond is between carbons 1 and 2

Question 4

What is the infix used to describe alkynes?

Answer 4

o According to the rules of the IUPAC system, the infix -yn- is used to show the presence of a carbon-carbon triple bond

Question 5

Describe how to name an alkyne

Answer 5

IUPAC Rules
o For larger molecules, number the longest carbon chain that contains the triple bond from the end that gives the triply bonded carbons the lower numbers

Question 6

What is an alkyne in which the triple bond is between carbons 1 and 2?

Answer 6

terminal alkynes