✦ LIBER ✦
C3-Symmetric Titanium(IV) Triphenolate Amino Complexes for a Fast and Effective Oxidation of Secondary Amines to Nitrones with Hydrogen Peroxide
✍ Scribed by Cristiano Zonta; Elisa Cazzola; Miriam Mba; Giulia Licini
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 219 KB
- Volume
- 350
- Category
- Article
- ISSN
- 1615-4150
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✦ Synopsis
Abstract
The efficient catalytic oxidation of secondary amines to nitrones using hydrogen peroxide as primary oxidant is described. The titanium(IV) complex 2 bearing a C~3~‐symmetrical triphenolate amino ligand has proved to be an air‐ and water‐tolerant complex that efficiently catalyzes secondary amine oxidations at 60 °C without previous activation [catalyst loading as low as 0.01%, yields up to 99%, turnover numbers (TONs) up to 8000 and turnover frequencies (TOFs) up to 11000 h^−1^).