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Volumn 42, Issue 30, 2003, Pages 3509-3511

A bisphosphepine ligand with stereogenic phosphorus centers for the practical synthesis of β-aryl-β-amino acids by asymmetric hydrogenation

Author keywords

Asymmetric synthesis; Hydrogenation; Ligand design; P ligands; Rhodium

Indexed keywords

CATALYSTS; HYDROGENATION; PHOSPHORUS; SYNTHESIS (CHEMICAL);

EID: 0042531839     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200351465     Document Type: Article
Times cited : (163)

References (45)
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    • note
    • As Heller et. al pointed out in reference [3b], the "E/Z isomeric mixtures of β-aryl-β-(acylamino)acrylates" referred to in references [4b] and [3e] were actually mixtures of -β-aryl-β-(acylamino)acrylates and (Z)-diacetylated products. The authors have corroborated the mischaracterization.
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    • Several binaphthophosphepine ligands in which the P atoms are not stereogenic centers have been reported; see: a) D. Xiao, Z. Zhang, X. Zhang, Org. Lett. 1999, 1, 1679-1681; b) D. Xiao, X. Zhang, Angew. Chem. 2001, 113, 3533-3536; c) Y. Chi, X. Zhang, Tetrahedron Lett. 2002, 43, 4849-4852;d) K. Junge, G. Oehme, A. Monsees, T. Riermeier, U. Dingerdissen, M. Beller, Tetrahedron Lett. 2002, 43, 4977-4980.
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    • Several binaphthophosphepine ligands in which the P atoms are not stereogenic centers have been reported; see: a) D. Xiao, Z. Zhang, X. Zhang, Org. Lett. 1999, 1, 1679-1681; b) D. Xiao, X. Zhang, Angew. Chem. 2001, 113, 3533-3536; c) Y. Chi, X. Zhang, Tetrahedron Lett. 2002, 43, 4849-4852;d) K. Junge, G. Oehme, A. Monsees, T. Riermeier, U. Dingerdissen, M. Beller, Tetrahedron Lett. 2002, 43, 4977-4980.
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    • Several binaphthophosphepine ligands in which the P atoms are not stereogenic centers have been reported; see: a) D. Xiao, Z. Zhang, X. Zhang, Org. Lett. 1999, 1, 1679-1681; b) D. Xiao, X. Zhang, Angew. Chem. 2001, 113, 3533-3536; c) Y. Chi, X. Zhang, Tetrahedron Lett. 2002, 43, 4849-4852;d) K. Junge, G. Oehme, A. Monsees, T. Riermeier, U. Dingerdissen, M. Beller, Tetrahedron Lett. 2002, 43, 4977-4980.
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    • Several binaphthophosphepine ligands in which the P atoms are not stereogenic centers have been reported; see: a) D. Xiao, Z. Zhang, X. Zhang, Org. Lett. 1999, 1, 1679-1681; b) D. Xiao, X. Zhang, Angew. Chem. 2001, 113, 3533-3536; c) Y. Chi, X. Zhang, Tetrahedron Lett. 2002, 43, 4849-4852;d) K. Junge, G. Oehme, A. Monsees, T. Riermeier, U. Dingerdissen, M. Beller, Tetrahedron Lett. 2002, 43, 4977-4980.
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    • Several binaphthophosphepine ligands in which the P atoms are not stereogenic centers have been reported; see: a) D. Xiao, Z. Zhang, X. Zhang, Org. Lett. 1999, 1, 1679-1681; b) D. Xiao, X. Zhang, Angew. Chem. 2001, 113, 3533-3536; c) Y. Chi, X. Zhang, Tetrahedron Lett. 2002, 43, 4849-4852;d) K. Junge, G. Oehme, A. Monsees, T. Riermeier, U. Dingerdissen, M. Beller, Tetrahedron Lett. 2002, 43, 4977-4980.
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    • note
    • CCDC-204741 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk/conts/retrieving.html or from the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB21EZ, UK; fax: (+ 44)1223-336-033; or depost@ccdc.cam.ac.uk). We thank Dr. H. Yennawar for solving the crystal structure.
  • 39
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    • note
    • See Supporting Information for details.
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    • No reaction was observed in the absence of acid. HBF4 was used to protonate the pyridine nitrogen atom. A similar strategy was applied in the hydrogenation of pyridyl α-dehydroamino acid derivatives; see: C. Döbler, H.-J. Kreuzfeld, M. Michalik, H. W. Krause, Tetrahedron: Asymmetry 1996, 7, 117-125.
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    • note
    • The Supporting Information includes procedures for the synthesis of and analytical data for binapine, procedures for the synthesis of substrates, hydrogenation procedures, information on molecular simulation, and the X-ray crystal structure of 3.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.