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Wacker Oxidation and Wacker-Type Reactions

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Presentation on theme: "Wacker Oxidation and Wacker-Type Reactions"— Presentation transcript:

1 Wacker Oxidation and Wacker-Type Reactions
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2 The Wacker Process

3 Overview on Wacker Oxidation

4 Mechanism of the Wacker Oxidation: High Cl- Concentration

5 Mechanism of the Wacker Oxidation: Low Cl- Concentration

6 By-Products Observed in the Wacker Oxidation: Isomerization of Alkenes

7 By-Products in the Wacker Oxidation: Chlorination Products

8 By-Products in the Wacker Oxidation: Allylic Oxidation Products

9 By-Products in the Wacker Oxidation: Oxidative Cleavage Products

10 Variation to the Classical Wacker Oxidation: Co-Oxidant

11 Variation to the Classical Wacker Oxidation: Co-Oxidant

12 Variation to the Classical Wacker Oxidation: Solid Phase Supported Catalyst

13 Variation to the Classical Wacker Oxidation: Phase Transfert Catalyst

14 Variation to the Classical Wacker Oxidation: Biphasic System

15 Chemoselectivity of Wacker Oxidation: Steric Hindrance

16 Chemoselectivity of Wacker Oxidation: External vs Internal Alkenes

17 Chemoselectivity of Wacker Oxidation: Steric Hindrance

18 Chemoselectivity of Wacker Oxidation: Compatibility with Functional Groups

19 Chemoselectivity of Wacker Oxidation: Compatibility with Functional Groups

20 Wacker-Type External Oxo-Nucleophiles Addition

21 Wacker-Type Amino Cyclisation (Oxidative Amination)

22 Wacker-Type Amino Cyclisation (Oxidative Amination)

23 Proposed Catalytic Cycle for Copper Free Wacker-Type Reaction

24 Wacker-Type External Amino-Nucleophile Addition

25 Asymmetric Wacker-Type Cyclization

26 Asymmetric Wacker-Type Cyclization

27 Catalytic Asymmetric Wacker-Type Cyclization: Limited to Tetrasubstituted Alkenes

28 Catalytic Asymmetric Wacker-Type Cyclization: Limited to Trisubstituted Alkenes

29 Catalytic Asymmetric Wacker-Type Cyclization: 6-Membereds Rings

30 Stereochemistry of the Oxypalladation Step

31 Stereochemistry of the Oxypalladation Step

32 Stereochemistry of the Oxypalladation Step

33 Stereochemistry of the Oxypalladation Step

34 Desymmetrization by Wacker-Type Cyclization

35 Desymmetrization by Wacker-Type Cyclization

36 Anti-Markovnikov Wacker Oxidation

37 Anti-Markovnikov Products: Steric Effect

38 Anti-Markovnikov Products: Proximal Complexing Function

39 Anti-Markonikov Products: Proximal Complexing Function

40 Anti-Markovnikov Products: Proximal Complexing Function

41 Anti-Markovnikov Products: Proximal Double Bond

42 Anti-Markovnikov Oxidative Amination

43 Anti-Markovnikov Products: Cationic Rhodium Complex

44 Formation of Allylic Acetates under Wacker Oxidation Conditions

45 Formation of Allylic Acetates in Wacker Conditions: Effect of Solvent

46 Formation of Branched Allylic Acetates

47 Formation of Branched Allylic Acetates

48 Formation of Linear Allylic Acetates

49 Application to the Total Synthesis of Garsubellin A

50 Application to the Total Synthesis of Calyculin A and B

51 Application to Total Synthesis

52 Conclusion

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54 Anti-Markovnikov Products: Cationic Rhodium Complex

55 Anti-Markonikov Products: Proximal Complexing Function

56 To the Frontier of Wacker-Type Reactions: Wacker-Type Heteroannulation Process


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