Ionic and Covalent Copper(II)-Based Catalysts for Michael
Additions. The Mechanism†

Comelles, Josep; Moreno-Mañas, Marcial; Pérez, Elisabet; Roglans, Anna; Sebastián, Rosa M.; Vallribera, Adelina

doi:10.1021/jo049373z.s002

jo049373z_si_002.pdf (340.42 kB)

Ionic and Covalent Copper(II)-Based Catalysts for Michael Additions. The Mechanism^†

journal contribution

posted on 2004-10-01, 00:00 authored by Josep Comelles, Marcial Moreno-Mañas, Elisabet Pérez, Anna Roglans, Rosa M. Sebastián, Adelina Vallribera

Cu(SbF₆)₂-AdamBox and copper(II) bis-(5-tert-butylsalicylaldehydate) catalyze the Michael addition in neutral media. Mechanistic studies, based on UV−vis, IR, and electrospray ionization mass spectrometry (ESI-MS), suggest that copper enolates of the β-dicarbonyl formed in situ are the active nucleophilic species.

Ionic and Covalent Copper(II)-Based Catalysts for Michael Additions. The Mechanism^†

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Ionic and Covalent Copper(II)-Based Catalysts for Michael Additions. The Mechanism†

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Ionic and Covalent Copper(II)-Based Catalysts for Michael Additions. The Mechanism^†