Chiral Brønsted acid catalyzed enantioselective hydrophosphonylation of imines: Asymmetric synthesis of α-amino phosphonates

Organic Letters

Volumn 7, Issue 13, 2005, Pages 2583-2585

  Akiyama, Takahiko ^a   Morita, Hisashi ^a   Itoh, Junji ^a   Fuchibe, Kohei ^a  

^a GAKUSHUIN UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 24044538628     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol050695e     Document Type: Article

References (47)

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41. For a recent example of hydrophosphonylation reaction catalyzed by a chiral thiourea, see ref 10e.
42. 3)].
43. The diisopropyl esters gave better results than the corresponding diethyl esters in terms of enantioselectivity, vide infra.
44. The reaction in m-xylene showed slighly higher enantioselectivity than that in toluene.
45. The reaction at 0°C took much longer time for completion without beneficial effect on enantioselectivity.
46. 10d (Chemical Equation Presented)
47. For bifunctional Lewis acids, see: Shibasaki, M.; Kanai, M.; Funabashi, K. Chem. Commun. 2002, 1989-1999.