IUPAC Nomenclature: 3-Chlorobutane-1,2-diol

In summary, the compound given is named 3-chlorobutane-1,2-diol according to the IUPAC naming convention. The 'e' at the end is dropped when there is a vowel next to it, but not when there is a consonant, as in the case with 3-chlorobutane-1,2-diol. This is a convention to make the names easier to say.
  • #1
jadelamlam
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Homework Statement


Give the IUPAC name of the following compound

OH  Cl
|   |
C-C-C-C
  |
  OH
(Note:Hydrogen atoms are not drawn)


Homework Equations





The Attempt at a Solution


Model answer:3-chlorobutane-1,2-diol
Why it is called 3-chlorobutane-1,2-diol instead of 3-chlorobutan-1,2-diol?
Consider CH3CH2CH2OH,it is propan-2-ol,where "e" from "propane" is dropped.
So e from 3-chlorobutane-1,2-diol should also be deleted?
 
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  • #2
Aside from the fact that CH3CH2CH2OH is propan-1-ol, I have seen both names with an e on the end and not. Sometimes it's a language thing - German for instance tends not to have them. Is this the case here?
 
  • #3
It's a convention while naming the compounds. For instance, in propan-2-ol, the 'e' is dropped because there's a vowel next to 'e', that is 'o'. If it was a consonant, we would not have dropped the 'e' as it is the case with 3-chlorobutane-1,2-diol as 'd' isn't a vowel.
 
  • #4
Pranav-Arora said:
It's a convention while naming the compounds. For instance, in propan-2-ol, the 'e' is dropped because there's a vowel next to 'e', that is 'o'. If it was a consonant, we would not have dropped the 'e' as it is the case with 3-chlorobutane-1,2-diol as 'd' isn't a vowel.

Thx a lot.But do you know the reasons of it?
 
  • #5
Ahh, of course, thanks Pranav-Arora. As to why, it's probably along the lines of making things easier to say, with elided vowels etc
 

FAQ: IUPAC Nomenclature: 3-Chlorobutane-1,2-diol

1. What is the IUPAC nomenclature for 3-Chlorobutane-1,2-diol?

The IUPAC nomenclature for this compound is (3S)-3-chlorobutane-1,2-diol or (3R)-3-chlorobutane-1,2-diol, depending on the stereochemistry of the molecule.

2. How do you determine the stereochemistry of 3-Chlorobutane-1,2-diol?

The stereochemistry can be determined by looking at the relative position of the chlorine and hydroxyl groups on the carbon chain. In (3S)-3-chlorobutane-1,2-diol, the chlorine and hydroxyl groups are on the same side (cis), while in (3R)-3-chlorobutane-1,2-diol, they are on opposite sides (trans).

3. What is the molecular formula of 3-Chlorobutane-1,2-diol?

The molecular formula of 3-Chlorobutane-1,2-diol is C4H9ClO2.

4. What is the structural formula of 3-Chlorobutane-1,2-diol?

The structural formula of 3-Chlorobutane-1,2-diol is CH3CH2CH(Cl)CH2OH.

5. What are the properties of 3-Chlorobutane-1,2-diol?

3-Chlorobutane-1,2-diol is a colorless liquid with a slightly sweet odor. It is soluble in water and polar solvents, and is commonly used as a building block in organic synthesis. It is also a chiral compound, meaning it can exist in two different forms with different biological activities.

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