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addition step 2 rearrangement and hydride migration

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Unformatted text preview: p 1. π-Addition: Step 2. Rearrangement and hydride migration: Mechanism of the Hydrogenation Step 3. Hydride migration: Step 4. Hydrogenation to reform the active catayst: Chiral Catalysts Chiral binaphthyl based catalysts: 14.13 Olefin Metathesis Olefin Olefin Metathesis Olefin 2005 Nobel Prize to Grubbs, Chauvin and Schrock. First observation: Cross metathesis: Active Catalysts Grubbs’ catalyst: Ring closing example: Mechanism of Metathesis M represents the metal and its ligands. Stage 1. Formation of two new complexes: Mechanism of Metathesis Mechanism tage 2. Complex A. Addition of propylene and formation of 2-butene: Mechanism of Metathesis Mechanism tage 2. Complex B. Addition of propene and formation of ethylene: Stage 3. Repetition of stage 2 with the complexes formed in stage 2. Ole...
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