1 Chapter 13 Unsaturated Hydrocarbons 13.7 Properties of Aromatic Compounds.

Slides:

Advertisements

Similar presentations

TY 2002 Organic Mechanism 4 Nitration of Benzene.

Advertisements

AROMATIC COMPOUNDS By PUAN AZDUWIN BINTI KHASRI. Criteria for Aromaticity 1. A compound must have an uninterrupted cyclic cloud of electrons above and.

Electrophilic Substitution Reactions of Benzene Aim: To describe the electrophilic substitution of arenes with concentrated nitric acid in the presence.

Mechanism of addition of HBr to an Alkene Step 1: Formation of a carbocation Step 2: Nucleophillic addition of bromide.

Bromination of Benzene

Substitution reactions of benzene L.O.:  Outline the mechanism for mononitration and monohalogenation of benzene.

Aromatic Hydrocarbons

Hydrocarbon Rings Chemistry 122/121. Cyclic Hydrocarbons Both saturated and unsaturated hydrocarbons may be found in the form of a ring The resulting.

Unsaturated hydrocarbons Orbitals Natural gas?. Fig

Chapter 18 Electrophilic Aromatic Substitution

Electrophilic Aromatic Substitution

1 Treatment of cyclooctatetrene with potassium gives you a dianion. Classify the starting material and product as aromatic, antiaromatic or nonaromatic?

Electrophilic Aromatic Substitution

Addition Reactions Chapter 13 Unsaturated Hydrocarbons.

Structure and properties of benzene Nomenclature of Benzene.

Chapter 12 Unsaturated Hydrocarbons

Chapter 17 Reactions of Aromatic Compounds

1 Chapter 13 Unsaturated Hydrocarbons 13.6 Aromatic Compounds.

Chapter 11 Unsaturated Hydrocarbons

Aromatic Reactions Most common reactions for aromatics involve replacement of ring hydrogens by other atoms or groups (substitution reactions)

Unsaturated Hydrocarbons

12.12 Substituent Effects in Electrophilic Aromatic Substitution: Activating Substituents 8.

CHEMISTRY OF BENZENE: ELECTROPHILIC AROMATIC SUBSTITUTION Dr. Sheppard CHEM 2412 Summer 2015 Klein (2 nd ed.) sections: 19.1, 19.2, 19.3, 19.4, 19.5, 19.6,

1 Benzene and Aromatic Compounds Buckminsterfullerene—Is it Aromatic? The two most common elemental forms of carbon are diamond and graphite. Their physical.

Aromatic Substitution

1 Substitution Reactions of Benzene and Its Derivatives: Electrophilic Addition/Elimination Reactions. Benzene is aromatic: a cyclic conjugated compound.

Arenes Textbook p4-5.

Lecture 3 Unsaturated Hydrocarbons

1 Chapter 13 Alkanes, Alkynes, and Aromatic Compounds.

Objectives To learn to name hydrocarbons with double and triple bonds

Chapter 12 Unsaturated Hydrocarbons

16. Chemistry of Benzene: Electrophilic Aromatic Substitution Part 1 Based on McMurry’s Organic Chemistry, 6 th edition, Chapter 16.

CHEM 2211 Organic Chemistry I: Chapter 8 Summary of Reactions Know these!!!!! Slides 2-7 show the EAS reactions Slides 8-10 show the side chain reactions.

CHAPTER 23 ORGANIC CHEMISTRY. The Nature of Organic Molecules Carbon is tetravalent. It has four outer-shell electrons (1s 2 2s 2 2p 2 ) and forms four.

Chemsheets AS006 (Electron arrangement)

Chapter 16 The Chemistry of Benzene Derivatives. 2 MorphineValium.

Chapter 15 Reactions of Aromatic Compounds. Chapter 152  Electrophilic Aromatic Substitution  Arene (Ar-H) is the generic term for an aromatic hydrocarbon.

Benzene and Its Derivatives

Synthesis of Benzene Derivatives: Electrophilic Aromatic Substitution 15-8 Benzene undergoes substitution reactions with electrophiles. Electrophiles attack.

9 9-1 Copyright © 2000 by John Wiley & Sons, Inc. All rights reserved. Introduction to Organic Chemistry 2 ed William H. Brown.

Aromatic Compounds.

Chapter 15 Reactions of Aromatic Compounds

General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.1 Chapter 12 Alkenes, Alkynes, and Aromatic Compounds 12.5 Aromatic.

Unsaturated Hydrocarbons Dr. Michael P. Gillespie.

Electrophilic Substitution Lab 1 Chemical reactions in which an electrophile displaces a group in a compound, typically but not always hydrogen.

Chapter 5-2. Chemistry of Benzene: Electrophilic Aromatic Substitution

Aromatic Compounds Chapter Chem 1. The expressing aromatic compounds came to mean benzene and derivatives of benzene. Structure of Benzene: Resonance.

Electrophilic Aromatic Substitution Dr. Marwa Eid 1.

When a benzene ring is a substituent, it is called a

Organic and biochemistry

Treatment of cyclooctatetrene with potassium gives you a dianion

Organic Chemistry, First Edition Janice Gorzynski Smith

Electrophilic Substitution Reactions of Benzene

Chemistry of Aromatic Compounds

Chapter 12 Unsaturated Hydrocarbons

Benzene and Aromatic Compounds

Chemistry of Benzene: Electrophilic Aromatic Substitution

07 December 2018 Reactions of Benzene C4.2 Aromaticity.

Aromatics AH Chemistry, Unit 3(b).

Reactions & Mechanisms

Pyridine Is Aromatic.

An Intro to Organic Chemistry

Alkenes and Alkynes Learning Objectives: Keywords:

OF AROMATIC HYDROCARBONS

Reaction Mechanism in Aromatic hydrocarbons Batch: 2nd Semester Prof

Benzene and Aromatic Compounds

Presentation transcript:

1 Chapter 13 Unsaturated Hydrocarbons 13.7 Properties of Aromatic Compounds

2 Properties of Aromatic Compounds Aromatic compounds: Have a stable aromatic bonding system. Are resistant to many reactions. Undergo substitution reactions, which retains the stability of the aromatic bonding system.

3 Substitution Reactions In a substitution reaction, a hydrogen atom on a benzene ring is replaced by an atom or group of atoms. Type of substitution H on benzene replaced by Halogenation chlorine or bromine atom Nitration nitro group (—NO 2 ) Sulfonation —SO 3 H group

4 Halogenation Halogenation replaces a H on benzene by a chlorine or bromine atom. A catalyst such as FeCl 3 is used in chlorination; FeBr 3 in bromination.

5 Nitration Nitration replaces a H on benzene by a nitro (—NO 2 ) group from HNO 3. An acid catalyst such as H 2 SO 4 is used in nitration.

6 Sulfonation Sulfonation replaces a H on benzene by a —SO 3 H group from SO 3. An acid catalyst such as H 2 SO 4 is used in sulfonation.