Question

Как найти главную цепь у алкена? Алкина?

Answer 1

Главная цепь должна быть наиболее длинной и содержать в себе, двойную(у алкена) и тройную(у алкина) связь, нумерация производится где блже это связь, и так чтобы было большое кол-во заместителей.

Answer 2

Finding the Main Chain in an Alkene or Alkyne

To find the main chain in an alkene or alkyne, you can follow these steps:

1. Identify the Longest Carbon Chain: Look for the longest continuous chain of carbon atoms in the molecule. This chain will form the main backbone of the alkene or alkyne molecule.

2. Numbering the Carbon Atoms: Number the carbon atoms in the main chain starting from the end that gives the double or triple bond the lowest number.

3. Locate the Double or Triple Bond: Determine the position of the double or triple bond in the main chain by assigning the lowest possible number to the carbon atoms involved in the bond.

4. Naming the Compound: Use the IUPAC nomenclature rules to name the compound based on the number of carbon atoms in the main chain and the position of the double or triple bond.

For example, in the case of an alkene, the compound may be named as "X-ene" where X represents the prefix indicating the number of carbon atoms in the main chain, and "ene" indicates the presence of a double bond.

Similarly, for an alkyne, the compound may be named as "X-yne" where X represents the prefix indicating the number of carbon atoms in the main chain, and "yne" indicates the presence of a triple bond.

These steps will help you identify the main chain in an alkene or alkyne and name the compound according to the IUPAC nomenclature.