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Organic Chemistry
F I F T H ED I T I ON
Maitland Jones, Jr.
NEW YORK UNIVERSITY
Steven A. Fleming
TEMPLE UNIVERSITY
W. W. Norton & Company
E\nPfibCfe[fe
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W. W. Norton & Company has been independent since its founding in 1923, when William Warder Norton
and Mary D. Herter Norton first published lectures delivered at the People’s Institute, the adult education
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Norton family transferred control of the company to its employees, and today—with a staff of four hundred
and a comparable number of trade, college, and professional titles published each year—W. W. Norton &
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Copyright © 2014, 2010, 2005, 2000, 1997 by W. W. Norton & Company, Inc.
All rights reserved
Printed in Canada
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ISBN: 978-0-393-91303-3
W. W. Norton & Company, Inc., 500 Fifth Avenue, New York, NY 10110
www.wwnorton.com
W. W. Norton & Company Ltd., Castle House, 75/76 Wells Street, London W1T 3QT
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Brief Contents
1 Atoms and Molecules; Orbitals and Bonding 1
2 Alkanes 52
3 Alkenes and Alkynes 101
4 Stereochemistry 151
5 Rings 190
6 Substituted Alkanes: Alkyl Halides, Alcohols, Amines, Ethers,
Thiols, and Thioethers 229
7 Substitution Reactions: T he SN2 and SN1 Reactions 267
8 Elimination Reactions: T he E1 and E2 Reactions 331
9 Analytical Chemistry: Spectroscopy 367
10 Electrophilic Additions to Alkenes 441
11 More Additions to Ĭ Bonds 487
12 Radical Reactions 544
13 Dienes and the Allyl System: 2p Orbitals in Conjugation 588
14 Aromaticity 641
15 Substitution Reactions of Aromatic Compounds 693
16 Carbonyl Chemistry 1: Addition Reactions 765
17 Carboxylic Acids 833
18 Derivatives of Carboxylic Acids: Acyl Compounds 878
19 Carbonyl Chemistry 2: Reactions at the Ĝ Position 929
20 Carbohydrates 1026
21 Special Topic: Bioorganic Chemistry 1076
22 Special Topic: Amino Acids and Polyamino Acids
(Peptides and Proteins) 1104
23 Special Topic: Reactions Controlled by Orbital Symmetry 1153
24 Special Topic: Intramolecular Reactions and Neighboring
Group Participation 1203
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Contents
Selected Applications xix
Organic Reaction Animations xxi
Preface to the Fifth Edition xxiii
Introduction xxxi
1
Atoms and Molecules; Orbitals and Bonding
1
1.1
Preview
1.2
Atoms and Atomic Orbitals 4
1.3
Covalent Bonds and Lewis Structures
1.4
Formal Charges
1.5
Resonance Forms and the Curved Arrow Formalism
1.6
Hydrogen (H2): Molecular Orbitals
1.7
Bond Strength 37
1.8
An Introduction to Reactivity: Acids and Bases 44
1.9
Special Topic: Quantum Mechanics and Babies
1.10
Summary
1.11
Additional Problems 47
2
Alkanes
2.1
Preview
2.2
Hybrid Orbitals: Making a Model for Methane
2.3
T he Methyl Group (CH3) and Methyl Compounds (CH3X)
2.4
T he Methyl Cation (àCH3), Anion (ŹCH3), and Radical (CH3)
2.5
Ethane (C2H6), Ethyl Compounds (C2H5X),
and Newman Projections 67
2.6
Structure Drawings
2.7
Propane (C3H8) and Propyl Compounds (C3H7X)
2
13
20
23
32
45
45
52
53
54
63
65
74
75
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CONTENTS
2.8
Butanes (C4H10), Butyl Compounds (C4H9X),
and Conformational Analysis 77
2.9
Pentanes (C5H12) and Pentyl Compounds (C5H11X)
2.10
T he Naming Conventions for Alkanes 82
2.11
Drawing Isomers 85
2.12
Cycloalkanes
2.13
Physical Properties of Alkanes and Cycloalkanes
90
2.14
Nuclear Magnetic Resonance Spectra of Alkanes
91
2.15
Acids and Bases Revisited: More Chemical Reactions 94
2.16
Special Topic: Alkanes as Biomolecules 95
2.17
Summary
2.18
Additional Problems 97
3
Alkenes and Alkynes
3.1
Preview
3.2
Alkenes: Structure and Bonding 103
3.3
Derivatives and Isomers of Alkenes 111
3.4
Nomenclature
3.5
T he Cahn–Ingold–Prelog Priority System 116
3.6
Relative Stability of Alkenes: Heats of Formation
3.7
Double Bonds in Rings 122
3.8
Physical Properties of Alkenes
3.9
Alkynes: Structure and Bonding 127
3.10
Relative Stability of Alkynes: Heats of Formation
3.11
Derivatives and Isomers of Alkynes 130
3.12
Triple Bonds in Rings 132
3.13
Physical Properties of Alkynes
3.14
Acidity of Alkynes
3.15
Molecular Formulas and Degrees of Unsaturation
3.16
An Introduction to Addition Reactions of Alkenes and Alkynes 135
3.17
Mechanism of the Addition of Hydrogen Halides to Alkenes 136
3.18
T he Energetics of the Addition Reaction: Energy Diagrams 139
3.19
T he Regiochemistry of the Addition Reaction 141
3.20
A Catalyzed Addition to Alkenes: Hydration 144
3.21
Synthesis: A Beginning
3.22
Special Topic: Alkenes and Biology
80
87
96
101
102
115
119
127
130
133
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146
134
CONTENTS
3.23
Summary
147
3.24
Additional Problems 148
4
Stereochemistry 151
4.1
Preview
4.2
Chirality
4.3
T he (R /S) Convention 156
4.4
Properties of Enantiomers: Physical Differences
4.5
T he Physical Basis of Optical Activity
4.6
Properties of Enantiomers: Chemical Differences
4.7
Interconversion of Enantiomers by Rotation about a Single Bond:
gauche-Butane 168
4.8
Properties of Diastereomers: Molecules Containing More than One
Stereogenic Atom 169
4.9
Resolution, a Method of Separating Enantiomers from Each Other 174
4.10
Determination of Absolute Configuration [(R) or (S)]
4.11
Stereochemical Analysis of Ring Compounds (a Beginning) 177
4.12
Summary of Isomerism 180
4.13
Special Topic: Chirality without “Four Different Groups Attached to One
Carbon” 182
4.14
Special Topic: Stereochemistry in the Real World: Thalidomide, the
Consequences of Being Wrong-Handed 185
4.15
Summary
4.16
Additional Problems 187
5
Rings
5.1
Preview
5.2
Rings and Strain
5.3
Quantitative Evaluation of Strain Energy
5.4
Stereochemistry of Cyclohexane: Conformational Analysis 201
5.5
Monosubstituted Cyclohexanes 203
5.6
Disubstituted Ring Compounds 208
5.7
Bicyclic Compounds 216
5.8
Special Topic: Polycyclic Systems
5.9
Special Topic: Adamantanes in Materials and Biology
5.10
Summary
5.11
Additional Problems 226
152
153
160
161
164
176
186
190
191
191
198
221
223
225
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CONTENTS
6
Substituted Alkanes: Alkyl Halides, Alcohols, Amines,
Ethers, Thiols, and Thioethers 229
6.1
Preview
6.2
Nomenclature of Substituted Alkanes
6.3
Structure of Substituted Alkanes
6.4
Properties of Substituted Alkanes
6.5
Solubility
6.6
Formation of Substituted Alkanes
6.7
A Reaction of Alkyl Halides: Synthesis of Alkanes 257
6.8
Special Topic: Sulfur Compounds 260
6.9
Special Topic: Crown Ethers 262
6.10
Summary 263
6.11
Additional Problems 264
7
Substitution Reactions: The SN2 and SN1 Reactions
7.1
Preview
7.2
Review of Lewis Acids and Bases
7.3
Reactions of Alkyl Halides: T he Substitution Reaction 272
7.4
Equilibrium and Reaction Rates, T hermodynamics and Kinetics 274
7.5
Substitution, Nucleophilic, Bimolecular: T he SN2 Reaction 284
7.6
T he SN2 Reaction in Biochemistry 304
7.7
Substitution, Nucleophilic, Unimolecular: T he SN1 Reaction
7.8
Summary and Overview of the SN2 and SN1 Reactions 313
7.9
What Can We Do with T hese Reactions?
How to Do Organic Synthesis 315
7.10
Summary
7.11
Additional Problems 325
8
Elimination Reactions: The E1 and E2 Reactions
8.1
Preview
8.2
T he Unimolecular Elimination Reaction: E1 332
8.3
T he Bimolecular Elimination Reaction: E2 336
8.4
Transition States: T hermodynamics versus Kinetics
8.5
Rearrangements of Carbocations 353
8.6
Special Topic: Other Eliminations 356
8.7
Special Topic: Enzymes and Reaction Rates 359
230
231
238
241
255
256
267
268
270
323
331
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305
CONTENTS
8.8
Special Topic: Why Are Rearrangements of Carbocations Fast? 361
8.9
Summary 362
8.10
Additional Problems 363
9
Analytical Chemistry: Spectroscopy 367
9.1
Preview
9.2
Chromatography 370
9.3
Mass Spectrometry 372
9.4
Ultraviolet/Visible Spectroscopy
9.5
Infrared Spectroscopy
9.6
1
9.7
NMR Measurements
9.8
Special Topic: More-Complicated NMR Spectra 415
9.9
13
9.10
Problem Solving: How to Use Spectroscopy to Determine Structure 421
9.11
Special Topic: Dynamic NMR
9.12
Summary
9.13
Additional Problems 430
10
Electrophilic Additions to Alkenes 441
10.1
Preview
10.2
Mechanism of the Electrophilic Addition of Hydrogen Halides to
Alkenes—Hydrohalogenation 443
10.3
Effects of Resonance on Regiochemistry
10.4
Brief Review of Resonance 449
10.5
Resonance and the Stability of Carbocations 451
10.6
Inductive Effects on Electrophilic Addition Reactions 455
10.7
More on Rearrangements of Carbocations 457
10.8
Mechanism of the Electrophilic Addition of Acid and Water to Alkenes—
Hydration 460
10.9
Mechanism of Dimerization and Polymerization of Alkenes 463
368
380
388
H Nuclear Magnetic Resonance Spectroscopy
394
397
C NMR Spectroscopy
419
426
429
442
10.10 Mechanism of Hydroboration of Alkenes
444
466
10.11 Hydroboration in Synthesis: Alcohol Formation 475
10.12 Special Topic: Rearrangements in Biological Processes
10.13 Summary
478
479
10.14 Additional Problems 481
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CONTENTS
11
More Additions to Ĭ Bonds
11.1
Preview
11.2
Electrophilic Addition of X2: Halogenation 488
11.3
Electrophilic Addition of Mercury: Oxymercuration 497
11.4
Electrophilic Addition of Oxygen: Epoxidation 499
11.5
Special Topic: Additions of Carbenes—Cyclopropane Synthesis 506
11.6
Dipolar Addition: Ozonolysis and Dihydroxylation 512
11.7
Hydrohalogenation of Alkynes 519
11.8
Hydration of Alkynes
11.9
Hydroboration of Alkynes
487
488
523
524
11.10 Reduction by Addition of H2: Hydrogenation 526
11.11 Reduction of Alkynes by Sodium in Ammonia 530
11.12 Special Topic: Three-Membered Rings in Biochemistry
11.13 Summary
532
534
11.14 Additional Problems 537
12
Radical Reactions
544
12.1
Preview
12.2
Formation and Simple Reactions of Radicals 546
12.3
Structure and Stability of Radicals
12.4
Radical Addition to Alkenes 559
12.5
Other Radical Addition Reactions 566
12.6
Radical-Initiated Addition of HBr to Alkynes 567
12.7
Photohalogenation 568
12.8
Allylic Halogenation: Synthetically Useful Reactions 575
12.9
Special Topic: Rearrangements (and Non-rearrangements)
of Radicals 578
545
555
12.10 Special Topic: Radicals in Our Bodies;
Do Free Radicals Age Us? 582
12.11 Summary
583
12.12 Additional Problems 584
13
Dienes and the Allyl System: 2p Orbitals in Conjugation
13.1
Preview
589
13.2
Allenes
590
13.3
Related Systems: Ketenes and Cumulenes
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588
CONTENTS
13.4
Allenes as Intermediates in the Isomerization of Alkynes
593
13.5
Conjugated Dienes 595
13.6
T he Physical Consequences of Conjugation 598
13.7
T he Chemical Consequences of Conjugation:
Addition Reactions of Conjugated Dienes 603
13.8
T hermodynamic and Kinetic Control of Addition Reactions 608
13.9
T he Allyl System: Three Overlapping 2p Orbitals
611
13.10 T he Diels–Alder Reaction of Conjugated Dienes 615
13.11 Special Topic: Biosynthesis of Terpenes
13.12 Special Topic: Steroid Biosynthesis
625
629
13.13 Summary 634
13.14 Additional Problems 635
14
Aromaticity 641
14.1
Preview
14.2
The Structure of Benzene
14.3
A Resonance Picture of Benzene 645
14.4
T he Molecular Orbital Picture of Benzene
14.5
Quantitative Evaluations of Resonance Stabilization in Benzene 650
14.6
A Generalization of Aromaticity: Hückel’s 4n + 2 Rule
14.7
Substituted Benzenes
14.8
Physical Properties of Substituted Benzenes
14.9
Heterobenzenes and Other Heterocyclic Aromatic Compounds 668
642
644
648
652
665
668
14.10 Polycyclic Aromatic Compounds 672
14.11 Special Topic: T he Bio-Downside, the Mechanism of Carcinogenesis by
Polycyclic Aromatic Hydrocarbons 676
14.12 T he Benzyl Group and Its Reactivity
678
14.13 Introduction to the Chemistry of Benzene 682
14.14 Summary
686
14.15 Additional Problems 688
15
Substitution Reactions of Aromatic Compounds 693
15.1
Preview
15.2
Hydrogenation of Aromatic Compounds 696
15.3
Electrophilic Aromatic Substitution Reactions 698
15.4
Substitution Reactions We Can Do Using Nitrobenzene 713
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CONTENTS
15.5
Electrophilic Aromatic Substitution of Heteroaromatic Compounds 719
15.6
Disubstituted Benzenes: Ortho, Meta, and Para Substitution
15.7
Synthesis of Polysubstituted Benzenes
15.8
Nucleophilic Aromatic Substitution 741
15.9
Special Topic: Benzyne
722
736
747
15.10 Special Topic: Diels–Alder Reactions 749
15.11 Special Topic: Stable Carbocations in “Superacid” 752
15.12 Special Topic: Biological Synthesis of Aromatic Rings;
Phenylalanine 753
15.13 Summary
756
15.14 Additional Problems 759
16
Carbonyl Chemistry 1: Addition Reactions
765
16.1
Preview
16.2
Structure of the Carbon–Oxygen Double Bond 767
16.3
Nomenclature of Carbonyl Compounds 770
16.4
Physical Properties of Carbonyl Compounds 773
16.5
Spectroscopy of Carbonyl Compounds 773
16.6
Reactions of Carbonyl Compounds: Simple Reversible Additions 776
16.7
Equilibrium in Addition Reactions 780
16.8
Other Addition Reactions: Additions of Cyanide and Bisulfite 784
16.9
Addition Reactions Followed by Water Loss: Acetal Formation 786
766
16.10 Protecting Groups in Synthesis
792
16.11 Addition Reactions of Nitrogen Bases: Imine and
Enamine Formation 795
16.12 Organometallic Reagents 802
16.13 Irreversible Addition Reactions: A General Synthesis of Alcohols 804
16.14 Oxidation of Alcohols to Carbonyl Compounds 807
16.15 Retrosynthetic Alcohol Synthesis 812
16.16 Oxidation of Thiols and Other Sulfur Compounds 814
16.17 T he Wittig Reaction 816
16.18 Special Topic: Biological Oxidation 818
16.19 Summary 820
16.20 Additional Problems 825
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17
Carboxylic Acids
833
17.1
Preview
17.2
Nomenclature and Properties of Carboxylic Acids
17.3
Structure of Carboxylic Acids
17.4
Infrared and Nuclear Magnetic Resonance Spectra of
Carboxylic Acids 838
17.5
Acidity and Basicity of Carboxylic Acids
17.6
Syntheses of Carboxylic Acids
17.7
Reactions of Carboxylic Acids 845
17.8
Special Topic: Carboxylic Acids in Nature
17.9
Summary
834
834
837
839
843
866
870
17.10 Additional Problems 872
18
Derivatives of Carboxylic Acids: Acyl Compounds
878
18.1
Preview
18.2
Nomenclature
18.3
Physical Properties and Structures of Acyl Compounds 885
18.4
Acidity and Basicity of Acyl Compounds 887
18.5
Spectral Characteristics
18.6
Reactions of Acid Chlorides: Synthesis of Acyl Compounds 890
18.7
Reactions of Anhydrides 895
18.8
Reactions of Esters 896
18.9
Reactions of Amides 901
879
881
888
18.10 Reactions of Nitriles 904
18.11 Reactions of Ketenes 907
18.12 Special Topic: Other Synthetic Routes to Acid Derivatives
907
18.13 Special Topic: A Family of Concerted Rearrangements of
Acyl Compounds 912
18.14 Summary
919
18.15 Additional Problems 923
19
Carbonyl Chemistry 2: Reactions at the ³ Position
19.1
Preview
19.2
Many Carbonyl Compounds Are Weak Brønsted Acids 931
19.3
Racemization of Enols and Enolates 942
19.4
Halogenation in the Ĝ Position 944
929
930
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CONTENTS
19.5
Alkylation in the Ĝ Position 951
19.6
Addition of Carbonyl Compounds to the Ĝ Position:
T he Aldol Condensation 961
19.7
Reactions Related to the Aldol Condensation 977
19.8
Addition of Acid Derivatives to the Ĝ Position:
The Claisen Condensation 982
19.9
Variations on the Claisen Condensation 990
19.10 Special Topic: Forward and Reverse Claisen Condensations in
Biology 994
19.11 Condensation Reactions in Combination 995
19.12 Special Topic: Alkylation of Dithianes 999
19.13 Special Topic: Amines in Condensation Reactions,
the Mannich Reaction 1000
19.14 Special Topic: Carbonyl Compounds without Ĝ Hydrogens 1001
19.15 Special Topic: T he Aldol Condensation in the Real World, an
Introduction to Modern Synthesis 1004
19.16 Summary
1007
19.17 Additional Problems 1014
20
Carbohydrates 1026
20.1
Preview
20.2
Nomenclature and Structure of Carbohydrates
20.3
Formation of Carbohydrates
20.4
Reactions of Carbohydrates 1043
20.5
Special Topic: The Fischer Determination of the Structure of d-Glucose
(and the 15 Other Aldohexoses) 1056
20.6
Special Topic: An Introduction to Disaccharides and
Polysaccharides 1063
20.7
Summary 1071
20.8
Additional Problems 1073
21
Special Topic: Bioorganic Chemistry
21.1
Preview
21.2
Lipids
21.3
Formation of Neutral and Acidic Biomolecules
21.4
Alkaloids
21.5
Formation of Basic Biomolecules: Amine Chemistry 1093
21.6
Summary
21.7
Additional Problems 1101
1027
1028
1040
1076
1077
1078
1086
1089
1100
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CONTENTS
22
Special Topic: Amino Acids and Polyamino Acids
(Peptides and Proteins) 1104
22.1
Preview
22.2
Amino Acids 1106
22.3
Reactions of Amino Acids 1118
22.4
Peptide Chemistry
22.5
Nucleosides, Nucleotides, and Nucleic Acids
22.6
Summary
22.7
Additional Problems 1150
23
Special Topic: Reactions Controlled by Orbital Symmetry
23.1
Preview
23.2
Concerted Reactions 1155
23.3
Electrocyclic Reactions 1156
23.4
Cycloaddition Reactions 1165
23.5
Sigmatropic Shift Reactions 1170
23.6
The Cope Rearrangement
23.7
A Molecule with a Fluxional Structure
23.8
How to Work Orbital Symmetry Problems 1193
23.9
Summary
1105
1120
1141
1147
1153
1154
1181
1185
1195
23.10 Additional Problems 1196
24
Special Topic: Intramolecular Reactions and Neighboring Group
Participation 1203
24.1
Preview
24.2
Heteroatoms as Neighboring Groups
24.3
Neighboring Ĭ Systems
24.4
Single Bonds as Neighboring Groups 1231
24.5
Coates’ Cation 1241
24.6
Summary
24.7
Additional Problems 1242
1204
1206
1219
1242
Glossary G-1
Credits
Index
C-1
I-1
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J\c\Zk\[8ggc`ZXk`fej
Helium
Carcinogens 674
5
Methane
Carcinogenesis 676
62
Ethylene: A Plant Hormone
Strychnine
110
Azo dyes
714
Aniline 716
176
Civetone 772
Thalidomide 185
Carboranes: Weird Bonding
223
Salicylic Acid
843
Synthetic diamonds 224
Nylon and polyesters 856
Alkyl halides
Fats, oils, soaps, and detergents 869
Ajoene
257
Velcro
260
Malic Acid
Eat Your Broccoli!
290
Cholesterol Formation
360
Vitamin A and vision 387
Magnetic resonance imaging (MRI) 394
Maitotoxin
Vitamin E
Vanillin
1006
Sugar Substitutes
1064
1067
1077
1080
1085
Alkaloid drugs 1089
582
Canavanine: An Unusual Amino Acid 1108
DNA and RNA
629
652
Palytoxin
Steroids
555
T he birth-control pill
T he Importance of “Pure Research” 977
Soap bubbles
533
Bombykol 603
Pine trees
Anticancer drugs 976
Yellow dyes
Ethyl Alcohol 477
Artemisinin
918
Cellulose and starch
425
Everyday alkene polymers 465
Pyrethrins
899
633
1141
Chorismate to Prephenate:
A Biological Cope Rearrangement 1185
Mustard Gas
1212
xix
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Fi^Xe`ZI\XZk`fe8e`dXk`fej
Bimolecular nucleophilic substitution: SN2
284
Friedel–Crafts acylation 725
SN2 with cyanide
291
Arene halogenation 737
Halide formation
301
Nucleophilic aromatic substitution: SNAr
Unimolecular nucleophilic substitution: SN1
305
Benzyne formation
748
Acetylide addition 315
Carbonyl hydration 780
Intramolecular SN2
Acetal formation
786
Unimolecular elimination: E1 333
Imine formation
796
Bimolecular elimination: E2 336
Grignard reaction 805
Hofmann elimination 342
Carbonyl reduction 806
Carbocation rearrangement: E1 356
Alcohol oxidation 808
Alkene hydrohalogenation 443
Diol cleavage 812
Alkene hydration
Wittig reaction 816
320
461
Alkene polymerization 465
Fischer esterification
Alkene hydroboration
Acid chloride formation
466
846
Alkene halogenation 489
Decarboxylation 863
Stabilized alkene halogenation 492
Acid chloride aminolysis
Halohydrin formation
Ester hydrolysis
493
Alkene epoxidation 499
Basic epoxide ring opening
Nitrile hydrolysis
502
Acidic epoxide ring opening
890
896
904
907
Enol halogenation 945
Alkene dihydroxylation 517
Radical alkene hydrohalogenation
858
Baeyer–Villiger oxidation
502
742
Malonate alkylation 958
563
Aldol condensation 962
Alkane halogenation 572
Michael addition 973
1,2-Hydrohalogenation of dienes 605
Mixed aldol condensation 979
1,4-Hydrohalogenation of dienes 605
Claisen condensation 985
Diels–Alder reaction 615
Cope rearrangement
1181
Benzylic oxidation 681
xxi
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Gi\]XZ\kfk_\=`ú_<[`k`fe
Most students in our organic chemistry courses are not chemistry majors. We wrote
this book for those students and anyone who wants a broad yet modern introduction
to the subject. We stress general principles because it is impossible to memorize
all the details of this vast subject. We want students to learn to make connections,
recognize patterns and trends, and use a set of organizing principles to make
the material more manageable and understandable. Students who will be taking
standardized exams, like the MCAT, will benefit from using this text and gaining a
deep understanding of the material. We also believe that the skill of critical thinking
is emphasized in this text. This skill will help in science courses taken in the future
and, more important, in future decision-making.
Although we have made substantial changes to the fifth edition that will benefit
students using this book, the voice remains the same. It is personal and talks directly
to the student not only about the material at hand, but also about the “how and
why” of organic chemistry. We believe it is much easier to enjoy, and learn, organic
chemistry if a strong focus on “Where are we and why are we here?” and “What is
the best way to do this?” is maintained. On occasion, we try to help students through
a tough part of the subject by pointing out that it is tough and then suggesting ways
to deal with it. When we talk to students, we try to use our experience to help them
succeed, and the book tries to do the same thing.
Every chapter begins with a Preview section in which the coming chapter is
outlined. At the end of the Preview, we describe the Essential Skills and Details
students will need for the chapter. At exam time, students can use these sections as
guides for study and review.
Organic chemistry is a highly visual subject. Organic chemists think by
constructing mental pictures of molecules and communicate with each other
by drawing pictures. To help students develop those same skills, we have added
Visualize, Understand, Draw sections in each chapter. T hese sections highlight an
important skill or concept and break it down into these three general steps with the
goal of training students to use these same steps when they are solving problems.
One factor that can make organic chemistry difficult is that new language must
be learned. Organic chemists talk to each other using many different conventions
and at least some of that language must be learned, or communication is impossible.
In addition to general treatments of nomenclature at the beginning of many
chapters, we have incorporated numerous Convention Alerts in which aspects of
the language that chemists use are highlighted.
Throughout the book, reference is made to the connection between organic
chemistry and the world of biology. Almost every chapter has a section devoted
to the biological relevance of new reactions discussed. We also have Applications
Boxes to illustrate the relevance of the subject to students’ lives.
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