What is the structure of 2-ethyl-3-hexyne?

Question

Luna Chen · Accepted Answer

Are you sure this is an hexyne, and not an heptyne?

#"3-hexyne"# #-=# #H_3C-CH_2C-=C-CH_2CH_3#, The third and fourth carbons in the chain are triply bound, and since this is an even-numbered acetylene, we can number from any end. Given this structure, we have defined the numbering system. #C2# is an ethyl group......... #"2-ethyl-3-hexyne"# #-=# #H_3C-CH(CH_2CH_3)C-=C-CH_2CH_3#, The longest hydrocarbyl chain is now seven carbons long, so this is not a proper name. According to organic nomenclature, you must first identify the LONGEST hydrocarbyl chain, which is a heptyne derivative. Could you please check your query?

Jeremiah Adams · Answer

undefined CH3-CH2-C-CH2-CH2-CH3-C

HIX Tutor · Answer

undefined The structure of 2-ethyl-3-hexyne can be determined by following these step-by-step instructions:

1. Start with a six-carbon chain, which represents the "hex-" part of the name.
2. Identify the carbon atoms within the hexane chain, numbered 1 to 6.
3. Choose the second carbon atom (number 2) in the chain and attach an ethyl group to it. An ethyl group has two carbon atoms and five hydrogen atoms.
4. Replace one of the hydrogen atoms on the second carbon with a triple bond. This represents the "-yne" part of the name, indicating a triple bond.
5. To represent the location of the triple bond, indicate the position of the triple-bonded carbon atom in the name (number 3) by writing it before the "-yne" part.
6. Label all the remaining carbon atoms (number 1, 3, 4, 5, and 6) in the hexane chain.
7. Add hydrogen atoms to all the carbon atoms, except for the ones involved in the triple bond and the ethyl group.

Remember, it's always a good idea to draw the structure and use models if you have them to visualize the molecule accurately.