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Volumn 49, Issue 36, 2008, Pages 5328-5331

Efficient, enantioselective synthesis of a β,β-disubstituted carboxylic acid by Ru-XylPhanePhos-catalyzed asymmetric hydrogenation

Author keywords

[No Author keywords available]

Indexed keywords

3 QUINOLINYL DERIVATIVE; BIARYLPHOSPHINE; CARBOXYLIC ACID DERIVATIVE; PHOSPHINE DERIVATIVE; PROTEIN INHIBITOR; QUINOLINE DERIVATIVE; RUTHENIUM; VITRONECTIN RECEPTOR ANTAGONIST;

EID: 47749097898     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2008.06.068     Document Type: Article
Times cited : (9)

References (40)
  • 22
    • 47749089043 scopus 로고    scopus 로고
    • note
    • Synthesis of substrate 1 will be reported elsewhere.
  • 23
    • 47749088293 scopus 로고    scopus 로고
    • note
    • n] led to full conversions and less than 25% ee's.
  • 24
    • 47749095084 scopus 로고    scopus 로고
    • note
    • See Supplementary data for bisphosphine ligands employed in the initial catalyst testing.
  • 25
    • 47749108362 scopus 로고    scopus 로고
    • note
    • Conversions and ee's throughout this study were determined by HPLC analysis using Chiracel AD-H column, hexane/i-PrOH = 80:20, after conversion to methyl ester.
  • 32
    • 47749093959 scopus 로고    scopus 로고
    • note
    • Solvent screening at S/C 500, 10 bar, 40 °C showed early on that MeOH was the best solvent for use in this system.
  • 37
    • 47749090577 scopus 로고    scopus 로고
    • note
    • n] catalyst.
  • 38
    • 47749104181 scopus 로고    scopus 로고
    • note
    • 3N as an additive, no conversion was observed in this system.
  • 39
    • 47749129692 scopus 로고    scopus 로고
    • note
    • 2O in such systems led to low conversions and partial deprotection of the Boc group (3-15%).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.