A novel catalytic system for oxygenation with molecular oxygen induced by transition metal complexes with a multidentate N-heterocyclic podand ligand

作者：Hirao T^*; Moriuchi T; Ishikawa T; Nishimura K; Mikami S; Ohshiro Y; Ikeda I

来源：Journal of Molecular Catalysis A: Chemical , 1996, 113(1-2): 117-130.

DOI：10.1016/S1381-1169(96)00052-0

• epoxidation
• oxygenation
• quinone
• oxygen
• transition metal complex
• multidentate ligand
• N-heterocyclic ligand
• podand

An efficient system for the catalytic epoxidation reaction of olefins with molecular oxygen was achieved by the utilization of FeCl2 and the N-heterocyclic podand ligand, N,N'-bis{2-(4-imidazolyl)ethyl}-2,6-pyridinedicarboxamide (BIPA), without the need for a co-reductant. The pyridyl-substituted N-heterocyclic podand ligand, N,N'-bis{2-(2-pyridyl)ethyl}-2,6-pyridinedicarboxamide (2-BPEPA) was useful in the Co(OAc)(2)-catalyzed selective oxygenation of phenols to the corresponding p- or o-quinones with molecular oxygen. Efficiency of the oxygenation catalysts largely depends on the coordination interaction with the heterocyclic moieties of the podand ligands.

• 出版日期1996-11-25