A Level
Organic Reactions
Structure and Bonding
Polymers
Solid State
Organic Reactions
C=O nucleophilic addition
•
Hydrate formation
•
Borohydride reduction
•
Cyanide addition
•
Hemiacetal formation
•
Grignard and organolithium addition
C=O nucleophilic substitution
•
Ester hydrolysis/formation - acid catalysis
•
Amide formation from acid chloride
•
Acid chloride formation from carboxylic acid-SOCl
2
•
Acid chloride formation from carboxylic acid-PCl
5
C=O addition - loss of carbonyl oxygen
•
Acetal formation
•
Cyclic acetal formation
•
Enamine formation
•
Wittig reaction
•
Imine formation
•
Oxime formation
•
Hydrazone formation
•
Wolff-Kishner reduction
•
Reduction with LiAlH
4
Stereochemistry
•
Introduction
•
Configuration
•
Chirality R and S
•
Chiral or achiral
•
Diastereoisomers
•
Conformations
•
Multiple conformations
•
Newman Projections
•
Tartaric acid and Newman Projections
•
Cyclohexane conformations
•
Decalin conformations
Nucleophilic substitution
•
Simple S
N
2 reaction
•
S
N
1 and S
N
2
•
Carbocation structure and stability
•
More S
N
2 reactions
•
Mitsunobu reaction
Elimination
• E2 bimolecular examples
-
E2 to form diene
-
E2 Stereoselective for E
-
E2 Stereospecific Acyclic
-
E2 Cyclohexyl Diast A
-
E2 Cyclohexyl Diast B
•
E1 unimolecular
•
E1cb unimolecular conjugate base
•
Nitrile oxide synthesis via oxime
Electrophilic addition to alkenes
•
Ethylene and Bromine
•
Stereospecific addition
•
Epoxidation peracid
•
Epoxidation of E-Allyl silane
•
Unsymmetrical alkenes HBr
•
Regioselective addition
•
Diene bromination
•
Cyclohexene bromination
•
Dihydroxylation using OsO
4
Electrophilic aromatic substitution
•
Nitration of benzene
•
Friedel-Crafts alkylation
•
Friedel-Crafts acylation
•
Sulfonation of benzene
Electrophilic alkenes
•
Benzyne mechanism
•
S
N
Ar Addition-elimination
•
S
N
Ar two nitro groups
•
Formation of nitrosonium ion
•
Formation of diazonium salt
Oxidation
•
Jones Oxidation
•
SeO
2
allylic oxidation
•
Swern Oxidation
•
Oxidation of dihydropyridine
•
NaIO
4
diol cleavage
•
Pb(OAc)
4
diol cleavage
Enols and Enolates as nucleophiles
•
Cyclopentanone Aldol - acid cat
•
Intramolecular aldol reactions
•
Knoevenagel condensation
•
Lithium enolates
•
Mannich reaction
•
Enolate alkyation - Allylic strain
•
Enolate acylation - Claisen condensation
•
Wittig reaction
•
Acid-catalysed Bromination
•
Base-catalysed Bromination
•
Anti
Aldol Formation
•
Syn
Aldol Formation
•
Stereoselective
Anti
Aldol
•
Stereoselective
Syn
Aldol
Conjugate addition
•
How conjugation changes the reactivity of carbonyl groups
•
Enolisation
•
Direct conjugate addition with enols
•
Conjugate addition reactions
•
Conjugate addition of enolates
•
Robinson annelation
•
Dimedone synthesis
•
Conjugate Peroxide addition-Epoxidation
•
Enantioselective conjugate addition
Aromatic heterocycles
•
Introduction
•
Pyridine - Structure
-
Nucleophilic Substitution
-
Acts as a Nucleophilic Catalyst
•
Pyridine N-Oxide - Structure
-
Nucleophilic Substitution
-
Cleavage of N-oxide bond
•
Hydroxy Pyridine - Tautomerism
•
Pyrrole - Structure
-
The Vilsmeier Reaction
-
The Mannich Reaction
-
Pyrrole - conjugate alkylation
•
The Ritter reaction
•
Hantsch pyridine synthesis
•
DDQ oxidation of dihydropyridine
Diels-Alder reactions
•
Endo v Exo
•
Diels Alder: orbital explanation for the endo rule
•
Regioselectivity in Diels-Alder
•
Dienophile stereochemistry
•
Diene stereochemistry
•
Auxiliary-controlled Diels-Alder
Pericyclic reactions
•
Overview
•
Cycloadditions
-
Ozonolysis 1,3-dipolar
-
Nitrone 1,3-dipolar
-
Isoxazole 1,3-dipolar
-
[4+3]-Allyl cycloaddition
-
[6+4]-Thermal cycloaddition
-
Triazole formation
-
Tetrazole formation
-
Intramolecular carbonyl ene
-
Dihydroxylation using OsO
4
-
Periodate diol cleavage
•
Sigmatropic rearrangements
-
[3,3]-Claisen rearrangement aromatic
-
[3,3]-Claisen rearrangement acyclic
-
[3,3]-Ireland-Claisen
-
[2.3]-shift sulfoxide
-
[1,5]-H shift cyclopentadiene
-
[1,7]-H sigmatropic shift
-
[3,3]-Fischer Indole
•
Electrocyclic reactions
-
Stereospecificity
-
Conrotatory - cyclobutene
-
Disrotatory - hexatriene
•
Cheleotropic reactions
-
Stereospecific diene-SO
2
Rearrangements
•
Benzilic acid
•
Neighbouring group migration
•
Pinacol
•
Semipinacol rearrangements of diazonium salts
•
Ring expansion
•
Wagner-Meerwein rearrangements
•
Payne rearrangement
•
Beckmann rearrangement
•
Favorskii rearrangement
•
Tiffeneau-Demjanov rearrangement
•
Rearrangement using different nucleophiles
•
Stereochemistry can indicate NGP
•
Which group migrates?
•
Baeyer-Villiger
•
Neighbouring group participation
Radical reactions
•
HBr addition to isobutene
•
Termination steps
•
Chlorination of alkanes
•
Allylic bromination isobutene
•
Allylic bromination cyclohexene
•
Conjugate addition to acrylonitrile
•
Bu
3
SnH reduction of C-Br
•
Cyclisations exo/endo
•
Cyclisation tin hydride
•
Pinacol coupling
•
Julia Olefination
Fragmentations
•
Bond polarization
•
Ring expansion
•
Beckmann fragmentation
•
Fragmentations are controlled by stereochemistry
•
Fragmentation of diastereoisomers
•
Juvenile hormone synthesis
Carbene chemistry
•
Photolysis of diazomethane to produce a carbene
•
Methylation of carboxylic acid using diazomethane
•
Formation of carbenes
•
Reactions of carbenes
•
Bamford-Stevens reaction
•
Simmons-Smith reaction
Stereoselectivity
•
Wittig reaction
•
Cyclopropanation
•
Felkin-Anh reduction-LiAlH
4
•
Chelation controlled addition
•
Chelated reduction ZnBH
4
•
Intramolecular carbonyl ene reaction
•
Beta-keto sulfoxide reduction
•
Cyclohexene epoxide axial opening
•
Anti
Aldol Formation
•
Syn
Aldol Formation
•
Stereoselective
Anti
Aldol
•
Stereoselective
Syn
Aldol
•
Allylic strain enolate
•
Energy Profile of beta-silyl enolate
•
Epoxidation of Z-Allyl silane
•
Epoxidation of E-Allyl silane
•
Axial cyclohexanone alkylation-enamine
•
Energy Profile of Z-allyl silane
•
Energy Profile of E-allyl silane
Baldwin's rules
•
Baldwin's rules - Classes of cyclization
•
Baldwin's rules - Endo-trig reactions
Organo-main-group chemistry (B/Si/S)
•
Sulfur
-
Asymmetric Sulfoxidation
-
Sulfonium ylids
-
Sulfoxonium ylids
-
Pummerer rearrangement
-
Sulfoxide elimination
-
Swern Oxidation
-
Julia Olefination
•
Boron
-
Hydroboration of alkenes
-
Hydroboration of cyclopentadiene
-
Crotyl boranes react stereospecifically with aldehydes
-
Reduction of a ketone using Alpine borane
•
Silicon
-
Vinyl silanes react with electrophiles
-
The Peterson reaction
-
Stereospecific Peterson olefination
-
Silicon alpha anion stabilisation
-
Epoxidation of Z-Allyl silane
-
Epoxidation of E-Allyl silane
Organometallic chemistry
•
Palladium
-
Stille Coupling Reaction
-
Mizoroki-Heck Reaction
-
Carbonylative Stille Coupling Reaction
-
Carbonylation Of A Vinyl Bromide
-
Nucleophilic allylic substitution
-
TMM cycloaddition
-
Suzuki Reaction
•
Ruthenium
-
Hydrogenation Ru cat.
-
Hydroformylation Ru cat.
-
Olefin metathesis - unsaturated pyrrole
-
Olefin metathesis - macrocycle
Enantioselective auxiliaries
•
Methylation of an enolate
•
Benzylation of an enolate
•
Evans oxazolidinone syn Aldol
•
Evans ent-oxazolidinone syn Aldol
•
Evans oxazolidinone Diels-Alder
•
Phenylmenthol Diels-Alder
•
Alkylation of SAMP hydrazone
•
Conjugate addition Oppolzer sultam
•
Meyers enolate alkylation
•
Schöllkopf amino acid synthesis
Enantioselective reagents
•
Sparteine controlled deprotonation
•
Hydroboration of cyclopentadiene-IPC borane
•
Ketone reduction with BINAL-H
•
Acetylenic ketone reduction with Alpine borane
Enantioselective metal catalysts
•
Sharpless asymmetric epoxidation
•
Direct Sulfoxidation
•
Hydrogenation catalysed by Ru
•
Cyclopropanation allylic alcohol
•
Et
2
Zn addition to aldehydes
Enantioselective organocatalysts
•
Ketone reduction with CBS
•
Intermolecular aldol - proline
•
Intramolecular aldol - proline
•
Aldol dimerisation - proline
•
Intermolecular aldol with a
trans
substrate
•
Intramolecular S
N
2 Me-proline
•
Indole alkylation - imidazolidinone
•
Pyrrole - Friedel-Crafts alkylation
•
Carbonyl-ene phosphoramide
•
Imine hydrophosphonylation phosphate
YES
The compound will react via this mechanism but is not very good at either.
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