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Noyori Hydrogenation
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The Noyori Asymmetric Hydrogenation allows the enantioselective reduction of ketones with hydrogen gas and catalytic amounts of BINAP-Ru(II) complexes.
Reaction mechanism:
1. The BINAP-Ru dihalide precatalyst is converted to the catalyst by reaction of hydrogen.
2. The substrate coordinates to the catalyst, and hydrogenation of the keto ester proceeds through the keto form.
3. The product is displaced by the ligands, and the catalyst is regenerated upon reaction with another equivalent of hydrogen.
References:
Reaction mechanism:
1. The BINAP-Ru dihalide precatalyst is converted to the catalyst by reaction of hydrogen.
2. The substrate coordinates to the catalyst, and hydrogenation of the keto ester proceeds through the keto form.
3. The product is displaced by the ligands, and the catalyst is regenerated upon reaction with another equivalent of hydrogen.
References:
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