Module 2 Scenario-Based Problem: Fixing dis-functional organic chemical data

Running head: MODULE 2 SCENARIO-BASED PROBLEM 1
Module 2 Scenario-Based Problem: Fixing dis-functional organic chemical data
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MODULE 2 SCENARIO-BASED PROBLEM 2
Question 1: Drawing the structural isomers of C5H10 with their IUPAC name
The molecular formula C5H10 has over 13 isomers where the alkenes ar upto 6 isomers having
both cis and trans (E/Z) of pent-2-ene. We also have cycloalkanes which include
methylcyclobutane, cis-1, 2-dimethylcyclopropane, 1,1-dimethylcyclopropane, Trans-1,2-
dimethylcyclopropane, ethylcyclopropane etc.
The isomers of C5H10 are as shown below, their IUPAC are also given in column 3, the IUPAC
name varies for example 1-pentene is same as pentene
Isomer
Number
Structural Isomer of C5H10 IUPAC name
1 2-Methylbut-2-ene
2 3- methylbutene
3 2-methylbutene
4 1-Pentene
5 2-pentene
6 ethyl cyclopropane

MODULE 2 SCENARIO-BASED PROBLEM 3
7 cyclopentane
8 methylcyclobutane
9 1,1-dimethylcyclopropane
10 1,2-dimethylcyclopropane
Question 1(b): Isomers of C5H10 having geometric isomers
Two of the above isomers have geometrical isomers. These include:
2-pentene
1,2-dimethylcyclopropane
The geometric isomers occurs where restriction has e placed particularly between double bond
2-pentene can have geometrical isomers as shown
1, 2-dimethylcyclopropane can form geometrical isomers as illustrated below. The geometrical
isomer is reached since C-C bond is restricted at cyclopropane ring. Having methyl groups on
opposite side, Tran’s isomer is formed
Question 1(c). Drawing and labels of Z and E isomers from part (b)
2-pentene