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Volumn , Issue 19, 2007, Pages 3007-3010

New bidentate phosphorus ligands based on a norbornane backbone for rhodium-catalyzed asymmetric hydrogenation

Author keywords

Asymmetric hydrogenation; Bidentate phosphorus ligands; Diphosphinite ligand; Diphosphite ligands; Rhodium

Indexed keywords

ALKENE DERIVATIVE; BIDENTATE DIPHOSPHITE; BIDENTATE PHOSPHORUS; DIPHOSPHINITE; NORBORNANE DERIVATIVE; PHOSPHITE; PHOSPHORUS DERIVATIVE; RHODIUM; UNCLASSIFIED DRUG;

EID: 37249077401     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-992363     Document Type: Article
Times cited : (6)

References (32)
  • 32
    • 37249007876 scopus 로고    scopus 로고
    • Ligands Preparation (Scheme 1) The Preparation of Ligand 3 A 10 mL Schlenk flask was charged with diol 2 (100 mg, 0.78 mmol, DMAP (20 mg, Et3N (160 mg, 1.6 mmol) and THF (5 mL) under nitrogen. The mixture was stirred at 0°C. A solution of chlorodiphenylphosphine (0.3 mL, 1.56 mmol) in THF (2 mL) was added dropwise with stirring, then stirred at r.t. for 24 h. After filtration, the solvent was removed under vacuum. The crude product was purified through flash chromatography to give pure product as a thick liquid; yield 233 mg (47, MS (EI, m/z, 496 [M, 1H NMR (400 MHz, CDCl3, δ =7.44-7.13 (m, 20 H, Ph, 4.70-4.69 (b, 2 H, C2 and C5, 2.25 (s, 2 H, bridgehead, 1.92 (d, 2 H, endo of C3 and C5, 1.69 (m, 2 H, exo of C3 and C5, 1.23 (s, 2 H, bridge, 13C NMR (100 MHz, CDCl3, δ, 149.678-122.009 (Ph, 75.628 (O-C, 42.500(bridgehead, 34.849 (bridge, 28.965 C3 and
    • 2 [M + K]: 795.1462; found: 795.1461.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.