On the stereoselective hydrogenation of chiral cyclobutyl dehydro-amino acid derivatives:: influence of the catalyst in the π-facial diastereoselection
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作者:
Aguado, GP
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机构:Univ Autonoma Barcelona, Dept Quim, E-08193 Barcelona, Spain
Aguado, GP
Alvarez-Larena, A
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机构:Univ Autonoma Barcelona, Dept Quim, E-08193 Barcelona, Spain
Alvarez-Larena, A
Illa, O
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机构:Univ Autonoma Barcelona, Dept Quim, E-08193 Barcelona, Spain
Illa, O
Moglioni, AG
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机构:Univ Autonoma Barcelona, Dept Quim, E-08193 Barcelona, Spain
Moglioni, AG
Ortuño, RM
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Univ Autonoma Barcelona, Dept Quim, E-08193 Barcelona, SpainUniv Autonoma Barcelona, Dept Quim, E-08193 Barcelona, Spain
Ortuño, RM
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机构:
[1] Univ Autonoma Barcelona, Dept Quim, E-08193 Barcelona, Spain
[2] Univ Autonoma Barcelona, Unitat Cristallog, E-08193 Barcelona, Spain
Several optically active cyclobutyl dehydro-amino acid derivatives have been hydrogenated employing Wilkinson, (S,S)-chiraphos-Rh and Et-duphos-Rh (both enantiomers) as catalysts. The use of a chiral catalyst has been revealed to be crucial for the production of saturated amino acids with high stereoselectivity from substrates in which the chiral cyclobutyl unit is separated from the double bond by a methylene group. (C) 2001 Elsevier Science Ltd. All rights reserved.
机构:5929 Central Research & Development Department, E. I. du Pont de Nemours & Company, Wilmington, Delaware 19880-0328, Experimental Station, Wilmington
机构:5929 Central Research & Development Department, E. I. du Pont de Nemours & Company, Wilmington, Delaware 19880-0328, Experimental Station, Wilmington