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Asymmetric synthesis of dipeptides by means of homogeneous hydrogenation catalyzed by chiral rhodium complexes

✍ Scribed by Iwao Ojima; Tadashi Suzuki

Publisher
Elsevier Science
Year
1980
Tongue
French
Weight
191 KB
Volume
21
Category
Article
ISSN
0040-4039

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πŸ“œ SIMILAR VOLUMES

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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

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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 unde