Fanan Feno Feno 1
11/3/2025
Chang
Organic Chemistry 12A
4-methyl-2-pentanol Lab
Objectives
The goal of this lab is to synthesize methyl pentene isomers by dehydrating the alcohol
4-methyl-2-pentanol, a reaction that involves losing water and forming alkenes. Meanwhile, we
will observe the effects of E1 and E2 reactions.
Reaction Scheme
Table of Materials
Chemical structure Amount Molecular Boiling/Melting Density Hazards
used or Weight Point
produced
4-methyl-2-pentanol 4 mL 102.17 131.6°C (boiling) 0.961 ● Skin irritant
g/mol g/mL ● Eye irritant
● Vapors may cause
dizziness
4-methyl-1-pentene < 10 mL 84.15 53°C (boiling) 2.90 ● Highly flammable
g/mol g/mL ● Skin irritant
(vapor) ● Eye irritant
cis-4-methyl-2-pentene < 10 mL 84.16 58°C (boiling) 0.69 ● Flammable
g/mol g/mL ● Skin irritant
● Eye irritant
● Respiratory
11/3/2025
Chang
Organic Chemistry 12A
4-methyl-2-pentanol Lab
Objectives
The goal of this lab is to synthesize methyl pentene isomers by dehydrating the alcohol
4-methyl-2-pentanol, a reaction that involves losing water and forming alkenes. Meanwhile, we
will observe the effects of E1 and E2 reactions.
Reaction Scheme
Table of Materials
Chemical structure Amount Molecular Boiling/Melting Density Hazards
used or Weight Point
produced
4-methyl-2-pentanol 4 mL 102.17 131.6°C (boiling) 0.961 ● Skin irritant
g/mol g/mL ● Eye irritant
● Vapors may cause
dizziness
4-methyl-1-pentene < 10 mL 84.15 53°C (boiling) 2.90 ● Highly flammable
g/mol g/mL ● Skin irritant
(vapor) ● Eye irritant
cis-4-methyl-2-pentene < 10 mL 84.16 58°C (boiling) 0.69 ● Flammable
g/mol g/mL ● Skin irritant
● Eye irritant
● Respiratory
