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Volumn 50, Issue 26, 2009, Pages 3216-3219

Enantiomerically enriched atropisomeric N,N′-diaryl ureas by oxidative kinetic resolution of their 2-sulfanyl derivatives

Author keywords

[No Author keywords available]

Indexed keywords

SULFIDE; SULFOXIDE; UREA DERIVATIVE;

EID: 65549126868     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2009.02.021     Document Type: Article
Times cited : (33)

References (53)
  • 32
    • 65549132850 scopus 로고    scopus 로고
    • note
    • We have been unable to determine with complete certainty the relative or absolute stereochemistry of the compounds in this Letter, but from the known conformational preference of related ureas (see Ref. 20) we deduce syn stereochemistry for the more thermodynamically stable of each pair of sulfoxides. The major product of m-CPBA oxidation turns out also to be the more stable, where both were determined. Absolute stereochemistry is deduced from the fact that (S)-13 gives (S) sulfoxides (Ref. 17i), and if the syn (=M, S) sulfoxide is formed faster the remaining sulfanylurea should be P.
  • 34
    • 65549144967 scopus 로고    scopus 로고
    • note
    • For details of the method used, see Ref. 5.
  • 46
    • 65549109790 scopus 로고    scopus 로고
    • note
    • ‡ is close to zero).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.