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Volumn 6, Issue 4, 2009, Pages 329-331

Salan-vanadium catalyzed enantioselective desymmetrization of meso-epoxides with aromatic thiols

Author keywords

Asymmetric catalysis; Enantioselectivity; Epoxides; Ring opening; Thiols; Vanadium

Indexed keywords


EID: 69549113079     PISSN: 15701786     EISSN: None     Source Type: Journal    
DOI: 10.2174/157017809788489990     Document Type: Article
Times cited : (1)

References (42)
  • 1
    • 9444263106 scopus 로고    scopus 로고
    • For recent reviews, see
    • For recent reviews, see: Hirao, T. Chem. Rev., 1997, 97, 2707.
    • (1997) Chem. Rev. , vol.97 , pp. 2707
    • Hirao, T.1
  • 41
    • 69549128735 scopus 로고    scopus 로고
    • 2. The solvent was removed under reduced pressure and the residue was purified by flash column chromatography to furnish the corresponding hydroxyl sulfides. The enantiomeric purity was determined by HPLC analysis using a Daicel Chiracel OD-H column or OB-H column
    • 2. The solvent was removed under reduced pressure and the residue was purified by flash column chromatography to furnish the corresponding hydroxyl sulfides. The enantiomeric purity was determined by HPLC analysis using a Daicel Chiracel OD-H column or OB-H column
  • 42
    • 69549102386 scopus 로고    scopus 로고
    • Ligand 3b was synthesized according to the following procedure: Under an argon atmosphere, 1.5 mL anhydrous DMF was added dropwise into a mixture of NaH (1.5 g, 25 mmol) and 15 mL anhydrous THF in a Schlenk tube. Then the mixture was stirred for 10 min and 2a (1.62 g, 5 mmol) was added. After stirred for another 30 min, bromobenzyl (1.3 mL, 11 mmol) was added and the mixture was stirred for 8 h at 50 °C. Water (5 mL) was then added to quench the reaction and the aqueous layer was separated and extracted with ether (3 × 30 mL). The combined organic layer was dried over anhydrous sodium sulfate
    • 3): δ 1.10-1.37 (m, 4H), 1.69- 1.82 (m, 2H), 2.07-2.10 (m, 1H), 2.23-2.29 (m, 1H), 2.60 (s, 2H), 3.41-3.46 (d, 1H), 3.55-3.59 (d, 1H), 3.75-3.82 (t, 3H), 3.98-4.02 (d, 1H), 4.96-5.11 (m, 4H), 6.91-6.93 (m, 4H), 7.21-7.27 (m, 3H), 7.29-7.34 (m, 3H), 7.40-7.47 (m, 10H). MS (EI): 505(M-1, 16), 399(26), 94(5), 213(3), 197(17), 107(4), 106(2), 91(100), 65(2).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.