Q15E
Question
From what alkyne might each of the following substances have been made? (Green = Cl.)
Step-by-Step Solution
Verified- The alkyne required to form 4-Methylpentanal is 4-Methylpentyne.
- The alkyne required to form 1,1-dichloroethyl-2-methylcyclohexane is 1-Ethyne-2-methylcyclohexane.
Molecular compounds containing triple bonds are referred to as alkynes
Black sphere represent Carbon
Grey sphere represent Hydrogen atom
Red sphere represent Oxygen atom
By consider above representation the structure of the given compound is drawn.
The IUPAC name of the aldehyde is 4-Methylpentanal.
Synthesis of aldehyde can occur by hydroboration – oxidation of an alkyne.
There are 5 carbon atoms in the parent chain along with a methyl group substituent at the fourth position. Therefore the alkyne must be 4-Methylpentyne.
Black sphere represent Carbon atom
Grey sphere represent Hydrogen atom
Green sphere represent Chlorine atom
By consider above representation the structure of the given compound is drawn.
The IUPAC name of the dihalide is 1,1-dichloroethyl-2-methylcyclohexane.
The addition of two molecules of to the alkyne can give the desired dihalide.
With the use of 1-ethyne-2-methylcyclohexane, given 1,1-dichloroethyl-2-methylcyclohexane can be formed.