Question

Structural isomers of Heptane. Questions :

1. Build a model for the straight chain isomer of c7h16. Draw the structural formula & write IUPAC name for this isomer.

2. Move one carbon atom from the end of the chain & add methyl substituent to the chain. Draw the structural formula & name this isomer.

3. Move the methyl group to a new position on the chain. Then draw and name the third isomer. Is there a third position that the methyl group can be moved on the chain of six carbons to form yet another different isomer??

4. Make other structural isomers by shortening the longest straight chain and using the removed carbons as a substitute. Draw the structural formulas and name each isomer.

Please don't copy and paste from other sources. I want to understand thoroughly. If you don't know the answer please allow others to answer.

Answer 1

n-Heptane is the straight-chain alkane with the chemical formula C₇H_16.

_{*IUPAC name is Heptane}

Please follow this isomers.
2-Methylhexane (isoheptane), H3C–CH(CH3)–CH2–CH2–CH2–CH3,
3-Methylhexane, H3C–CH2–C*H(CH3)–CH2–CH2–CH3 (chiral),
2,2-Dimethylpentane (neoheptane), H3C–C(CH3)2–CH2–CH2–CH3,
2,3-Dimethylpentane, H3C–CH(CH3)–C*H(CH3)–CH2–CH3 (chiral),
2,4-Dimethylpentane, H3C–CH(CH3)–CH2–CH(CH3)–CH3,
3,3-Dimethylpentane, H3C–CH2–C(CH3)2–CH2–CH3,
3-Ethylpentane, H3C–CH2–CH(CH2CH3)–CH2–CH3,
2,2,3-Trimethylbutane, H3C–C(CH3)2–CH(CH3)–CH3, this isomer is also known as pentamethylethane and triptane