Q.74. - Organic Chemistry

Question

Question: Read Appendix B on naming branched alkyl substituents, and draw all possible alkyl groups having the formula ${\mathit{C}}_{\mathbf{5}}{{\mathit{H}}_{\mathbf{11}}}^{\mathbf{-}}$ . Give the IUPAC names for the eight compounds of molecular formula  ${\mathit{C}}_{\mathbf{10}}{\mathit{H}}_{\mathbf{20}}$ that contain a cyclopentane ring with each of these alkyl groups as a substituent.

Step-by-Step Solution

Answer

Answer

Alkyl groups having the formula $C_5{H_{11}}^{-}$ are:

Compounds having the molecular formula $C_{10}{H}_{20}$  are:

Step 1: Alkanes

Saturated hydrocarbons comprising only carbon and hydrogen are referred to as alkanes.

The general formula of an alkane is $C_n{H}_{2n+2}$ .

The species obtained after the removal of a hydrogen atom from an alkane is referred to as alkyls.

The general formula of an alkyl is $C_n{H}_{2n+1}$ .

Step 2: Alkyl groups having the formula C 5 H 11 -

The alkyl groups with the formula  $C_5{H_{11}}^{-}$ are:

Alkyl groups having a formula  $C_5{H_{11}}^{-}$

Step 3: Compounds with the molecular formula C 10 H 20

It is given that the compound contains a cyclopentane ring. Therefore, the carbon chain attached to the ring should consist of five carbon and 11 hydrogen atoms.

 

The compounds having the molecular formula $C_{10}{H}_{20}$ along with their IUPAC names are provided below.

Compounds having molecular formula  $C_{10}{H}_{20}$