Question

Write the structures of the following compounds.

2-methyl prop-1-ene.

Answer 1

Definition of IUPAC names

IUPAC nomenclature of organic chemistry is a method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry.

Step 1

• ‘Prop’ means continuous chain with the maximum number of carbon atoms, here the chain is having 3 carbon atoms:$\mathrm{C}-\mathrm{C}-\mathrm{C}$

Step 2

• There is 1 substituent (methyl group) at the second position: $\mathrm{C}-\mathrm{C}({\mathrm{CH}}_3\hspace{0.17em})-\mathrm{C}$

Step 3

• The suffix ‘ene’ suggests a double bond unsaturated carbon is present in 1 position:${\mathrm{H}}_2\mathrm{C}=\mathrm{C}\left({\mathrm{CH}}_3\right)-{\mathrm{CH}}_3$

Therefore, the structure is ${\mathrm{H}}_2\mathrm{C}=\mathrm{C}\left({\mathrm{CH}}_3\right)-{\mathrm{CH}}_3$