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Volumn , Issue 6, 2008, Pages 853-856

Direct and facile bromination at the 5- and 5′-positions of (R)-6,6′-dialkyl-and (R)-6,6′-diaryl-2,2′-binaphthols

Author keywords

(R) BINOL, bromination; Five step reaction

Indexed keywords

5,5' DIBROMO 6,6' BIS(4 METHYLPHENYL) 2,2' BINAPHTHOL; 5,5' DIBROMO 6,6' BIS(4 TRIFLUROMETHYLPHENYL) 2,2' BINAPHTHOL; 5,5' DIBROMO 6,6' DIBUTYL 2,2' BINAPHTHOL; 5,5' DIBROMO BIS(3,5 DIMETHYPHENYL) 2,2' BINAPHTHOL; NAPHTHOL DERIVATIVE; UNCLASSIFIED DRUG;

EID: 42149147380     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2008-1042902     Document Type: Article
Times cited : (13)

References (37)
  • 2
    • 1842430722 scopus 로고    scopus 로고
    • (b) Pu, L. Chem. Rev. 2004, 104, 1687.
    • (2004) Chem. Rev , vol.104 , pp. 1687
    • Pu, L.1
  • 37
    • 42149136605 scopus 로고    scopus 로고
    • General Procedure for Suzuki Reaction Method and Hydrolysis Reaction Method (R)-6,6′-Dibromo-2,2′-bis(methoxymethoxy)-1, 1′-binaphthyl (1 equiv) is stirred with the corresponding boronic acid (2.5-3.5 equiv) and Pd(PPh3)4 (7-10 mol, in a mixture solution of THF or DME and 2 M K2CO3 solution (referred to as solvent/base) overnight. The mixture was filtered through a short column of silica gel with EtOAc as an eluent. After removal of solvents under reduced pressure, the residue was extracted with CH2Cl2. The organic layer was washed with H2O and brine, dried over anhyd Na 2SO4 and concentrated. The crude product was purified by column chromatography on silica gel. The product was dissolved in THF. A mixture of MeOH and HCl (12 M) was added and stirred at r.t. for 12 h. The solvent was removed under reduced pressure, and the residue was extracted with EtOAc
    • -1.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.