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First example of water-soluble transition-metal catalysts for Oppenauer-type oxidation of secondary alcohols

✍ Scribed by Abdelaziz Nait Ajjou

Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
53 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis

The first water-soluble transition-metal catalysts for Oppenauer-type oxidation of secondary alcohols have been developed. The catalytic system composed of [Ir(COD)Cl] 2 , 2,2%-biquinoline-4,4%-dicarboxylic acid dipotassium salt (BQC) and sodium carbonate is highly efficient for the selective oxidation of benzylic and aliphatic secondary alcohols to the corresponding ketones with catalyst/substrate ratios ranging from 0.4 to 2.5%. The substitution of [Ir(COD)Cl] 2 by its rhodium analog [Rh(COD)Cl] 2 generates a less active catalytic system. [Ir(COD)Cl] 2 /BQC was also found to be more active than its waterinsoluble analog system [Ir(COD)Cl] 2 /2,2%-biquinoline (BC).

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First Example of Direct Reductive Amination of Aldehydes with Primary and Secondary Amines Catalyzed by Water-Soluble Transition Metal Catalysts.
✍ Andre Robichaud; Abdelaziz Nait Ajjou πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons βš– 24 KB πŸ‘ 2 views

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