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2004
Reduction
O 0220
52- 041
High Loading Polymer Reagents Based on Polycationic Ultraresins. Polymer-Supported Reductions and Oxidations with Increased Efficiency. — Two new polycationic ultraresins, quaternized cross-linked poly(ethylene imine) salts, are synthesized,
which combine low swelling with high mechanical stability. Therefore, ultraresin-based polymer supported reagents could become a viable alternative to current support materials. Ultraresin carrying borohydride can be used for the reduction of aldehydes, ketones and nitroolefines as well as in the reductive amination of aldehydes.
Ultraresin with periodate is employed in the oxidation of sulfides, diols, hydroquinones
and hydrazines. — (BARTH, M.; SHAH, S. T. A.; RADEMANN*, J.; Tetrahedron
60 (2004) 39, 8703-8709; Inst. Org. Chem., Eberhard-Karls-Univ.,
D-72076 Tuebingen, Germany; Eng.) — S. Adam
2004
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