'Leaving group' presentation slideshows

11. Reactions of Alkyl Halides: Nucleophilic Substitutions and Eliminations

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Organic Chemistry

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Organic Chemistry

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Chapter 24. Amines

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REAKSI ALKIL HALIDA : SUBSTITUSI DAN ELIMINASI NUKLEOFILIK

REAKSI ALKIL HALIDA : SUBSTITUSI DAN ELIMINASI NUKLEOFILIK. Nukleofil dan gugus pergi:. Reaksi alkil halida dengan nukleofil. Alkil halida terpolarisasi pada ikatan karbon-halida, membuat karbon menjadi elektrofil. Nukleofil mengganti halida pada ikatan C-X (sebagai basa Lewis)

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REAKSI ALKIL HALIDA : SUBSTITUSI DAN ELIMINASI NUKLEOFILIK

REAKSI ALKIL HALIDA : SUBSTITUSI DAN ELIMINASI NUKLEOFILIK. Nukleofil dan gugus pergi:. Reaksi alkil halida dengan nukleofil. Alkil halida terpolarisasi pada ikatan karbon-halida, membuat karbon menjadi elektrofil. Nukleofil mengganti halida pada ikatan C-X (sebagai basa Lewis)

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Organohalides and SN 2 , SN 1 , E 2 , E 1

Organohalides and SN 2 , SN 1 , E 2 , E 1. What Is an Organohalide?. An organic compound containing at least one carbon-halogen bond (C-X) X (F, Cl, Br, I) replaces H Can contain many C-X bonds Properties and some uses Fire-resistant solvents Refrigerants Pharmaceuticals and precursors.

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Chapter 6 Alkyl Halides: Nucleophilic Substitution and Elimination

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Goals

Chapter 9: Elimination Reactions of Alkyl Halides: Competition between Substitutions and Eliminations. Goals. After this chapter, you should be able to: Predict products of E2 and E1 reactions Determine stereochemistry of E2/E1 Products Determine whether S N 2, S N 1, E1 or E2 will occur.

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Nature Chem. 2012 , 4 , 817-824

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Alkohol dan Eter

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CHAPTER 5 ORGANIC HALOGEN COMPOUNDS

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CHAPTER 5 ORGANIC HALOGEN COMPOUNDS

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Elimination Reactions

Elimination Reactions. In addition to substitution, alkyl halides can also undergo elimination reactions, which lead to the formation of alkenes. As with substitution reactions, elimination reactions come in two mechanistic types:

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182

Chapter 8: Nucleophilic Substitution 8.1: Functional Group Transformation By Nucleophilic Substitution. Nucleophiles are Lewis bases (electron-pair donor) Nucleophiles are often negatively charged (more reactive) and used as their Li + , Na + , or K + salt

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Organic Halides (Haloalkanes) (Alkyl Halides)

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CHEMISTRY 2500

CHEMISTRY 2500. Topic #8: Nucleophilic Substitution Reactions (S N 1 and S N 2) Fall 2009 Dr. Susan Lait. Nucleophilic Substitution Reactions ( S N 1/S N 2).

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Organic Halides (Haloalkanes) (Alkyl Halides)

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Conversion of Alcohols into Alkyl Halides

Conversion of Alcohols into Alkyl Halides. Reactions with HX, SOCl 2 , PBr 3. Conversion of Alcohol into a Leaving Group. Form Tosylate ( p- TsCl, pyridine) Use strong acid (H 3 O + ) Convert to Alkyl Halide (HX, SOCl 2 , PBr 3 ). Alcohols to Alkyl Halides. S N 1: Carbocations can Rearrange.

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Ch 6 Lecture 2 More S N 2

Ch 6 Lecture 2 More S N 2. Synthesis using S N 2 Reactions R ? S conversions We know S N 2 interconverts stereochemistry We can use this to produce the enantiomer we want in one step How would we make the R thiol? (2-steps). If multiple C* present, only the reacting center is affected

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