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Asymmetric hydrogenation of activated keto compounds catalyzed by new chiral peralkyl-ampp rhodium complexes

✍ Scribed by Corinne Hatat; Abdallah Karim; Nicolas Kokel; André Mortreux; Francis Petit


Publisher
Elsevier Science
Year
1988
Tongue
French
Weight
164 KB
Volume
29
Category
Article
ISSN
0040-4039

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✦ Synopsis


Readily available peralkyl aminophosphinephosphinite ligands (alkyl-AMPP*) give neutral rhodium complexes active for the catalytic reduction of some activated ketones under atmospheric hydrogen pressure at ambient temperature (ee = 80 %).

Asymmetric hydrogenation of ketones has been performed under rather drastic conditions on rhodium diphosphine catalysts in moderate optical yieldsl.


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The mechanism of asymmetric hydrogenatio
✍ Kazuo Achiwa; Yoko Ohga; Yoichi Iitaka; Hazime Saito 📂 Article 📅 1978 🏛 Elsevier Science 🌐 French ⚖ 225 KB

Effective catalytic asymmetric hydrogenations catalyzed by chiral pyrrolidinephosphine-rhodium complexes have been proven to be useful for the preparation of optically active a-amino acids @3-91%)2'3), isoquinoline salsolidine (45%)6) cc-hydroxy esters (78.5%)4'5), R-(-)-pantolactone C80.5-86.7%17'g