'Crafts alkylation' diaporamas de présentation

Chapter 15

Chapter 15. Reactions of Aromatic Compounds. Electrophilic Aromatic Substitution Reactions. Overall reaction:. A General Mechanism for Electro- philic Aromatic Substitution. Different chemistry with alkene.

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Chapter 16

Chapter 16. Reactions of Aromatic Compounds Prepared By : Dr: Ishaq Takruri Philadelphia University Faculty of Pharmacy. Electrophilic Aromatic Substitution Reactions. Overall reaction.

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Aromaticity

Aromaticity. 6-pi electrons in the cyclic planar system, as one lone electron pair of S is not on the sp 2 orbital but on the unhybridized p orbital along the ring. EXTRA D-I-Y PROBLEMS. EAS: REACTIONS of Aromatics. BROMINATION/CHLORINATION. BROMINATION/CHLORINATION. NITRATION.

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Alcohols and Phenol

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Benzene and Aromatic Compounds

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Chapter 22

Chapter 22. Reaction of Benzene and its Derivatives. Reactions of Benzene. Substitution at a ring carbon. Contrast to radical mechanism for benzylic hyrdogens. Reactions of Benzene. Friedel Crafts. Friedel Crafts. Electrophilic Aromatic Substitution.

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Electrophilic Attack

Electrophilic Attack. Electrophile substitutes for a hydrogen on the benzene ring. Electrophilic Aromatic Substitution. Mechanism. =>. Requires a stronger electrophile than Br 2 . Use a strong Lewis acid catalyst, FeBr 3 . Bromination of Benzene. Energy Diagram for Bromination. =>.

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Aromaticity. Reactions of Benzene Chapter 15

Aromaticity. Reactions of Benzene Chapter 15. Contents of Chapter 15. Aromaticity Heterocyclic Compounds Chemical Consequences of Aromaticity Molecular Orbital Description of Aromaticity Reactivity Considerations Mechanism for Electrophilic Substitution

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AQA organic reaction mechanisms

AQA organic reaction mechanisms. Click a box below to go to the mechanism. Click here for advice. AS. Free Radical Substitution. Electrophilic Addition. Nucleophilic Substitution. (nitrile hydrolysis reaction). Elimination of HX from haloalkanes. Elimination of water from alcohols.

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Aromaticity hydrocarbons aliphatic aromatic alkanes alkenes alkynes

Aromaticity hydrocarbons aliphatic aromatic alkanes alkenes alkynes. Aliphatic compounds : open-chain compounds and ring compounds that are chemically similar to open-chain compounds. Alkanes, alkenes, alkynes, dienes, alicyclics, etc.

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c. H 2 SO 4

c.HNO 3 c. H 2 SO 4. c. H 2 SO 4. Sn + c.HCl. reflux. <55 ?C. reflux. Friedel-Crafts alkylation. Friedel-Crafts acylation. RCl AlCl 3 reflux. RCOCl Or (RCO) 2 O AlCl 3. substitution. substitution. Cl 2 (g) AlCl 3 room temp. Br 2 (l) FeBr 3 (or Fe) room temp. substitution.

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