what is the iupac name of ch tripple bond c single bond ch2 single bond cl

To determine the IUPAC name of the compound CH≡C-CH2-Cl, we need to break down the structure and follow a set of naming rules.

Here's the step-by-step process:

1. Identify the longest continuous chain:
Start by locating the longest carbon chain in the molecule. In this case, there are three carbon atoms in a row, so the main chain is propane.

2. Number the carbon atoms:
Assign numbers to each carbon atom in the main chain, starting from the end closest to the substituents. In this case, the carbon atom on the left is number 1, the middle one is number 2, and the right one is number 3.

3. Identify and name the functional groups:
Let's examine the substituents present in the molecule. We have a methyl group (CH3-) attached to the second carbon atom and a chloride ion (Cl-) attached to the third carbon atom.

- The methyl group is a substituent derived from methane, so it is named as a methyl substituent.
- The chloride ion is considered as a halogen substituent, so it is named as a chloro substituent.

4. Indicate substituent positions:
Now, use the numbers assigned to the carbon atoms to indicate where the substituents are attached. In this case, the substituents are attached to the second and third carbon atoms.

5. Combine the names:
Finally, combine all the names together in alphabetical order. The IUPAC name for the given compound is:

2-chloro-3-methylpropene

And there you have it! The IUPAC name of CH≡C-CH2-Cl is 2-chloro-3-methylpropene.