Open Question
What is the name for this molecule? 3-heptyne 3-heptene 3-hexyne 3-hexene
22. Organic Chemistry
Naming Alkynes
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Give a systematic name for this molecule.
A
10-methyl-8-propyl-4-undecyne
B
10-methyl-8-propyl-4-undecane
C
8-sec-butyl-4-undecene
D
8-tert-butyl-4-undecene
Verified step by step guidance1
Identify the longest carbon chain in the molecule. This will determine the base name of the compound. Count the number of carbon atoms in this chain.
Determine the type of carbon-carbon bonds present in the longest chain. If there are any double or triple bonds, note their positions and adjust the suffix of the base name accordingly (e.g., -ene for double bonds, -yne for triple bonds).
Identify and name the substituents attached to the main carbon chain. These could be alkyl groups or other functional groups. Number the carbon atoms in the main chain starting from the end nearest a substituent or a multiple bond to give the lowest possible numbers to the substituents and multiple bonds.
Assign a number to each substituent based on its position on the main chain. If there are multiple substituents of the same type, use prefixes such as di-, tri-, etc., to indicate their quantity.
Combine the names of the substituents with the base name of the compound, listing them in alphabetical order and using the appropriate numerical prefixes. Ensure that the name reflects the correct positions of the substituents and any multiple bonds.
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