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Novak A, Štefanič M, Grošelj U, Hrast M, Kasunič M, Gobec S, Stanovnik B, Svete J. A Simple Synthesis of Polyfunctionalized 4-Aminopyrazolidin-3-ones as ‘Aza-deoxa’ Analogs ofD-Cycloserine. Helv Chim Acta 2014. [DOI: 10.1002/hlca.201300169] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Boaz NW, Ponasik JA, Large SE. A versatile synthesis of phosphine–aminophosphine ligands for asymmetric catalysis. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2005.05.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Boaz NW, Large SE, Ponasik JA, Moore MK, Barnette T, Nottingham WD. The Preparation of Single Enantiomer 2-Naphthylalanine Derivatives Using Rhodium−Methyl BoPhoz-catalyzed Asymmetric Hydrogenation. Org Process Res Dev 2005. [DOI: 10.1021/op050026g] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Neil W. Boaz
- Research Laboratories, Eastman Chemical Company, Kingsport, Tennessee 37662, U.S.A
| | - Shannon E. Large
- Research Laboratories, Eastman Chemical Company, Kingsport, Tennessee 37662, U.S.A
| | - James A. Ponasik
- Research Laboratories, Eastman Chemical Company, Kingsport, Tennessee 37662, U.S.A
| | - Mary K. Moore
- Research Laboratories, Eastman Chemical Company, Kingsport, Tennessee 37662, U.S.A
| | - Theresa Barnette
- Research Laboratories, Eastman Chemical Company, Kingsport, Tennessee 37662, U.S.A
| | - W. Dell Nottingham
- Research Laboratories, Eastman Chemical Company, Kingsport, Tennessee 37662, U.S.A
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Boaz NW, Mackenzie EB, Debenham SD, Large SE, Ponasik JA. Synthesis and Application of Phosphinoferrocenylaminophosphine Ligands for Asymmetric Catalysis. J Org Chem 2005; 70:1872-80. [PMID: 15730312 DOI: 10.1021/jo048312y] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new class of bidentate ligands utilizing a phosphine-aminophosphine structure has been prepared on a ferrocenylethyl backbone in a straightforward and scalable fashion from acetylferrocene. The unique property of the alpha-ferrocenyl carbonium ion that allows the replacement of a variety of "leaving groups" with retention of configuration greatly facilitates the synthesis, and a number of ligands have been prepared by varying the nitrogen and phosphorus substituents on the aminophosphine. These readily prepared phosphinoferrocenylaminophosphines, known as BoPhoz ligands, show surprising hydrolytic and air stability, with no degradation after 3 years open to the air. The rhodium complexes of these ligands show exceedingly high enantioselectivities (generally >95% ee) and activities often in excess of 50,000 catalyst turnovers per hour for the asymmetric hydrogenation of a wide variety of dehydro-alpha-amino acid and itaconic acid derivatives. They also show high activity and good to excellent enantioselectivity for the hydrogenation of a number of alpha-ketoesters.
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Affiliation(s)
- Neil W Boaz
- Research Laboratories, Eastman Chemical Company, P.O. Box 1972, Kingsport, Tennessee 37662, USA.
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Jia X, Guo R, Li X, Yao X, Chan AS. Highly enantioselective hydrogenation of enamides catalyzed by rhodium–monodentate phosphoramidite complex. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01142-5] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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van den Berg M, Minnaard AJ, Schudde EP, van Esch J, de Vries AHM, de Vries JG, Feringa BL. Highly Enantioselective Rhodium-Catalyzed Hydrogenation with Monodentate Ligands. J Am Chem Soc 2000. [DOI: 10.1021/ja002507f] [Citation(s) in RCA: 378] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michel van den Berg
- Department of Organic and Molecular Inorganic Chemistry Stratingh Institute, University of Groningen Nijenborgh 4, 9747 AG Groningen, The Netherlands DSM Research, Life Sciences-Chemistry & Catalysis P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Adriaan J. Minnaard
- Department of Organic and Molecular Inorganic Chemistry Stratingh Institute, University of Groningen Nijenborgh 4, 9747 AG Groningen, The Netherlands DSM Research, Life Sciences-Chemistry & Catalysis P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Ebe P. Schudde
- Department of Organic and Molecular Inorganic Chemistry Stratingh Institute, University of Groningen Nijenborgh 4, 9747 AG Groningen, The Netherlands DSM Research, Life Sciences-Chemistry & Catalysis P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Jan van Esch
- Department of Organic and Molecular Inorganic Chemistry Stratingh Institute, University of Groningen Nijenborgh 4, 9747 AG Groningen, The Netherlands DSM Research, Life Sciences-Chemistry & Catalysis P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - André H. M. de Vries
- Department of Organic and Molecular Inorganic Chemistry Stratingh Institute, University of Groningen Nijenborgh 4, 9747 AG Groningen, The Netherlands DSM Research, Life Sciences-Chemistry & Catalysis P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Johannes G. de Vries
- Department of Organic and Molecular Inorganic Chemistry Stratingh Institute, University of Groningen Nijenborgh 4, 9747 AG Groningen, The Netherlands DSM Research, Life Sciences-Chemistry & Catalysis P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Ben L. Feringa
- Department of Organic and Molecular Inorganic Chemistry Stratingh Institute, University of Groningen Nijenborgh 4, 9747 AG Groningen, The Netherlands DSM Research, Life Sciences-Chemistry & Catalysis P.O. Box 18, 6160 MD Geleen, The Netherlands
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Kreuzfeld HJ, Döbler C, Fischer C, Baumann W. Synthesis of non proteinogenic dipeptides by asymmetric hydrogenation. Amino Acids 2000; 17:369-76. [PMID: 10707766 DOI: 10.1007/bf01361662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
N-Boc protected non-proteinogenic dipeptides with D,L- and L,L-configuration were prepared by catalytic asymmetric hydrogenation of the corresponding dehydrophenylalanyl-(L)-phenylalanine derivatives. The configuration of the new stereogenic centre depends first of all on the catalyst configuration and is less influenced by the substrate configuration. Diastereomeric excesses in the range of 80-96% de could be increased up to 99% by recrystallization. Analytical data of selected new compounds are given.
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Affiliation(s)
- H J Kreuzfeld
- Institut für Organische Katalyseforschung, Universität Rostock e.V., Federal Republic of Germany
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Döbler C, Kreuzfeld HJ, Fischer C, Michalik M. Asymmetric hydrogenation of dehydrodipeptide esters bearing different protective groups. Amino Acids 1999; 16:391-401. [PMID: 10399022 DOI: 10.1007/bf01388178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
N-[(Z)-N-Benzoyl- or N-Boc-(2-fluorophenyl)dehydroalanyl]-(R)- or (S)-phenylalanine esters were synthesized and hydrogenated to give the corresponding dipeptide derivatives with optical yields in the range of 53-87% de using the cationic rhodium complexes of PROPRAPHOS and BPPM. The efficiency of chiral diphosphine ligands as well the effect of the chiral center in the substrate on the catalytic asymmetric induction was studied.
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Affiliation(s)
- C Döbler
- Institut für Organische Katalyseforschung, Universität Rostock e.V., Federal Republic of Germany.
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Beller M, Eckert M, Moradi WA, Neumann H. Palladium-katalysierte Synthese von substituierten Hydantoinen – durch Carbonylierung zu Aminosäurederivaten. Angew Chem Int Ed Engl 1999. [DOI: 10.1002/(sici)1521-3757(19990517)111:10<1562::aid-ange1562>3.0.co;2-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Döbler C, Kreuzfeld HJ, Michalik M. Unusual amino acids. VIII. Asymmetric hydrogenation of some heteroaryl-N-Cbz and N-Boc aminocinnamic acid derivatives. Amino Acids 1999; 16:21-7. [PMID: 10078331 DOI: 10.1007/bf01318882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
(Z)-alpha-[(Benzyloxy)- or (tert.-butyloxy)carbonylamino]-beta (thienyl)- or (furyl)-acrylic acids and their esters were prepared by known methods and hydrogenated to the corresponding optically active alanine derivatives with optical yields in the range of 58-93% ee using the cationic rhodium complex of "PROPRAPHOS".
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Affiliation(s)
- C Döbler
- Institut für Organische Katalyseforschung an der Universität Rostock e.V., Federal Republic of Germany.
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Maryanoff CA, Scott L, Shah RD, Villani Jr FJ. A crystallization-induced asymmetric transformation to prepare (R)-4-chlorophenylalanine methyl ester. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0957-4166(98)00343-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Kreuzfeld HJ, D�bler C, Schmidt U, Krause HW. Synthesis of non-proteinogenic (D)- or (L)-amino acids by asymmetric hydrogenation. Amino Acids 1996; 11:269-82. [DOI: 10.1007/bf00807936] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/1996] [Accepted: 03/07/1996] [Indexed: 11/28/2022]
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