Electrophilic Aromatic Substitution
Mapua Institute of Technology
Organic Chemistry Laboratory 2 Final Report
Factors Affecting the Relative Rates of Electrophilic Aromatic
Substitution Reaction
Justiniano, Priscilla Raiza N.
School of Chemical Engineering and Chemistry, Mapua Institute of Technology, Intramuros, Manila, Philippines
Experiment No.1, Submitted on August 6, 2011 at N402.
Abstract
EXPERIMENT NUMBER ONE IS ALL ABOUT THE ELECTROPHILIC SUBSTITUTION OF AROMATIC COMPOUNDS. AROMATIC COMPOUNDS ARE THOSE ORGANIC COMPOUNDS WHICH HAVE BENZENE RING (CYCLOHEXA-1,3,5-TRIENE). AROMATIC COMPOUNDS ARE ALWAYS FOLLOWS THE SUBSTITUTION REACTION BECAUSE OF THE STABILITY OF THE BENZENE RING. IT WILL NOT PROCESS THE ELIMINATION, ADDITION OR REARRANGEMENT REACTION. THIS EXPERIMENT WILL DETERMINE THE FACTORS OF ELECTROPHILIC SUBSTITUTION ON DIFFERENT AROMATIC RINGS THUS IT WILL HAVE DIFFERENT REACTION RATES BECAUSE OF DIFFERENT STRUCTURE OF THE COMPOUNDS. DIFFERENT REACTION WILL YIELDS TO A CONCLUSION OF WHAT IS/ARE THE FACTOR/S OF ELECTROPHILIC SUBSTITUTION ON AN ORGANIC COMPOUND – AROMATIC COMPOUNDS.
There are three experiments in this chapter of the laboratory. First is the substitution by bromination. Second is the solvent effect which is dealing in the nature of the solvent. And third is the temperature test. Having this division in the experiment one, we can now conclude that substituent in substitution, the nature of the solvent polar or non-polar and the temperatures are the factors of electrophilic substitution on aromatic compounds.
1. INTRODUCTION
The most common reaction of aromatic compounds is electrophilic substitution. It is when an electron-poor reagent (an electrophile, E+) reacts with the electron-rich aromatic ring ( a nucleophile) and substitutes for one of the ring hydrogen. Electrophilic Substitution has several factors that affect its relative rates and this includes the following: substituents, solvent and temperature. Substituent like –OH and Br has
Organic Chemistry Laboratory 2 Final Report
Factors Affecting the Relative Rates of Electrophilic Aromatic
Substitution Reaction
Justiniano, Priscilla Raiza N.
School of Chemical Engineering and Chemistry, Mapua Institute of Technology, Intramuros, Manila, Philippines
Experiment No.1, Submitted on August 6, 2011 at N402.
Abstract
EXPERIMENT NUMBER ONE IS ALL ABOUT THE ELECTROPHILIC SUBSTITUTION OF AROMATIC COMPOUNDS. AROMATIC COMPOUNDS ARE THOSE ORGANIC COMPOUNDS WHICH HAVE BENZENE RING (CYCLOHEXA-1,3,5-TRIENE). AROMATIC COMPOUNDS ARE ALWAYS FOLLOWS THE SUBSTITUTION REACTION BECAUSE OF THE STABILITY OF THE BENZENE RING. IT WILL NOT PROCESS THE ELIMINATION, ADDITION OR REARRANGEMENT REACTION. THIS EXPERIMENT WILL DETERMINE THE FACTORS OF ELECTROPHILIC SUBSTITUTION ON DIFFERENT AROMATIC RINGS THUS IT WILL HAVE DIFFERENT REACTION RATES BECAUSE OF DIFFERENT STRUCTURE OF THE COMPOUNDS. DIFFERENT REACTION WILL YIELDS TO A CONCLUSION OF WHAT IS/ARE THE FACTOR/S OF ELECTROPHILIC SUBSTITUTION ON AN ORGANIC COMPOUND – AROMATIC COMPOUNDS.
There are three experiments in this chapter of the laboratory. First is the substitution by bromination. Second is the solvent effect which is dealing in the nature of the solvent. And third is the temperature test. Having this division in the experiment one, we can now conclude that substituent in substitution, the nature of the solvent polar or non-polar and the temperatures are the factors of electrophilic substitution on aromatic compounds.
1. INTRODUCTION
The most common reaction of aromatic compounds is electrophilic substitution. It is when an electron-poor reagent (an electrophile, E+) reacts with the electron-rich aromatic ring ( a nucleophile) and substitutes for one of the ring hydrogen. Electrophilic Substitution has several factors that affect its relative rates and this includes the following: substituents, solvent and temperature. Substituent like –OH and Br has