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Volumn , Issue 17, 2007, Pages 2743-2747

Novel Ir-SYNPHOS® and Ir-DIFLUORPHOS® catalysts for asymmetric hydrogenation of quinolines

Author keywords

Catalysts; Enantioselectivity; Hydrogenation; Iridium

Indexed keywords

IRIDIUM COMPLEX; QUINALDINE; QUINOLINE DERIVATIVE;

EID: 35649004432     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-991076     Document Type: Article
Times cited : (68)

References (42)
  • 9
    • 29144521717 scopus 로고    scopus 로고
    • For a recent review, see:, and references cited therein
    • (a) For a recent review, see: Glorius, F. Org. Biomol. Chem. 2005, 3, 4171; and references cited therein.
    • (2005) Org. Biomol. Chem , vol.3 , pp. 4171
    • Glorius, F.1
  • 23
    • 35649010977 scopus 로고    scopus 로고
    • Duprat de Paule, S.; Champion, N.; Ratovelomanana-Vidal, V.; Genet, J.-P.; Dellis, P. FR 2830254, 2001.
    • (a) Duprat de Paule, S.; Champion, N.; Ratovelomanana-Vidal, V.; Genet, J.-P.; Dellis, P. FR 2830254, 2001.
  • 42
    • 35649001496 scopus 로고    scopus 로고
    • General Hydrogenation Procedure The Ir complex (0.01 mmol) was placed in a dry 10 mL Schlenk tube which was equipped with a magnetic bar, a stopper, and connected to a supply of vacuum/argon. Degassed anhydrous acetone (2 mL) was introduced via a syringe under a stream of argon. The mixture was degassed with three vacuum/argon cycles. Methanolic HBr (2.2 equiv) was added dropwise to the solution and stirred for 30 min at r.t. The precipitate was concentrated under vacuum and anhydrous THF (2 mL) was introduced via syringe under a stream of argon. Then, the solution was degassed again with three vacuum/argon cycles. The mixture was transferred by a syringe to a dry 10 mL Schlenk tube, in which I2 (0.1 mmol) and quinoline (1 mmol) were placed beforehand. This Schlenk tube was equipped with a magnetic bar, a stopper, and connected to a supply of vacuum/argon. The mixture was degassed with three vacuum/argon cycles. The hydrogenation was performed under H 2 50
    • 2 (50 bar) at 30°C for 24 h. After releasing the hydrogen, the reaction mixture was concentrated and the crude product was purified by a short silica gel column eluted with cyclohexane-EtOAc.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.