We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byLexi Amor
Modified about 1 year ago
Dehydration of Alcohols
C - C X Y To make C=C need to eliminate X, Y. Elimination Reactions
C - C X Y 1. Concerted (x and y leave same time) 2. X leaves first 3. Y leaves first 3 ways to break 2 bonds
R-XR + + X - Alkene + H + E1 Reaction
Elimination 1 bond at a time E1
Substitution Elimination Rearrangement SN1SN1 E1 R+R+
SN1SN1 E1 SN1
C - C X H Strong base Dehydrohalogenation
What is the mechanism of dehydrohalogentation? C-D bond stronger than C-H bond. Isotope Effects
NaOEt k H /k D = 7 Isotope Effect
Isotope effect shows that C-H bond broken in the transition state. Bond Broken in Transition State
Change Element I > Br > Cl Element Effect
Same Side Opposite Side SYN vs. ANTI Elimination
Product Starting Material Energy Transition State
Elimination 2 Bonds at a time E 2
Put cyclohexanol and sulfuric acid in round bottom flask Fractional Distillation (steam distillation) collect distillate 80-85o Procedure
Dry product with K 2 CO 3
P T = P A + P B (Steam Distillation) Distil immiscible liquids
Potassium Permanganate KMnO 4 Baeyer Unsaturation Tests
Bromine and Cyclohexene
Br Bromonium Ion
Bromonium Ion Intermediate
Br - Mechanism
Chemical Reactions of Alkanes and Alkenes. 1. Structure cyclohexane cyclohexene Or.
Effects of chemical reactions: Reactants Products Chemical reactions rearrange the atoms in the reactants to form new products. The identities and properties.
Chemical Reactions of Alkanes and Alkenes. Structure cyclohexane cyclohexene.
Addition Reaction. Addition Reactions: Addition to Alkenes.
Aromatic Compounds. Structure and Stability of Benzene Carbon-carbon bond lengths and angles in benzene All carbon-carbon bonds are 139 pm in length Intermediate.
ORGANIC OPTION -G. IB Core Option Objective Electrophilic Addition Reactions G.1.1 Describe and explain the electrophilic addition mechanisms of the reactions.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Chapter 2 Chemistry of Life Revised by R. LeBlanc.
General Chemistry – Unit 7 Chemical Equations Chapter 7.
Topic 27 Topic 27 Topic 27: Hydrocarbons Table of Contents Topic 27 Topic 27 Basic Concepts Additional Concepts.
Endothermic Vs. Exothermic Reaction Graphs. Endothermic Reaction: a reaction in which the products have more stored energy than the reactants. The reaction.
Reactions of alkanes, alkenes, alkynes and aromatics.
INDICATORS & pH: Part 2 What is the difference between an acid and a base? Acid: H 3 O + (hydronium) ion Base: OH - (hydroxyl) ion Acids: react with metals.
Alkanes From Crude Oil (a mixture of Hydrocarbons) Fractional Distillation Uses Non Renewable source Reactivity No Reaction with acid or alkalis No Reaction.
Organic Synthesis Notation Chemistry Advanced Higher.
Notes 6-2 Chemical Reactions. Chemical Formulas The formula of a compound identifies the elements in the compound and the ratios in which their atoms.
CHEMISTRY in Biology. Composition of Matter Matter - Everything in universe is composed of matter Matter is anything that occupies space or has mass Mass.
Revision Functional Groups and Organic Chemistry ICS Madrid.
Trends of the Periodic Table Representative elements (main group) only so, transition and inner transition metals are not included in the trends Group/family:
Ch 2 The Chemical Context of Life. I. Overview All living organisms are subject to the laws of chemistry & physics. A basic knowledge of both helps.
Physical Science Acids & Bases. Solutions and Suspensions A mixture of flour & water suspension Colloidal dispersion solution Suspension - the particles.
Benzene is treated with a mixture of concentrated nitric acid and concentrated sulphuric acid at a temperature not exceeding 50°C. As temperature increases.
AP Notes Chapter 16 Equilibrium Dynamic chemical system in which two reactions, equal and opposite, occur simultaneously.
Periodic Trends. Atomic Radius Atomic Radius (size) is the distance between the nucleus and the outer electrons in an atom.
Chemical Reactions Chemistry. Reactions and Equations Objectives 1. Recognize evidence of chemical change. 2. Represent chemical reactions with equations.
Topic 20 High Level Organic Chemistry. IB HL Objective Deduce structural formulas for compounds containing up to six carbon atoms with one of the.
During a chemical change, substance and form new substances.
Unit 10 – Solutions! Chapter 14. What is a solution? Solutions are mixtures Solutions are homogenous Solutions are stable In a Solution, particles are.
Chemical Reactions. Chapter 9 chemical reaction is a process in which one or more substances change to make one or more new substances. NEW SUBSTANCE-
Chemical reactions occur when bonds (between the electrons of atoms) are formed or broken Chemical reactions involve changes in the chemical composition.
Bonding and Chemical Reactions Chapters 6 and 7. Compounds and Molecules Chemical structure: the arrangement of atoms in a substance Chemical Bond: forces.
© 2016 SlidePlayer.com Inc. All rights reserved.