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Volumn 35, Issue 29, 1994, Pages 5129-5132

Asymmetric dihydroxylation of olefins containing sulfur: Chemoselective oxidation of CC double bonds in the presence of sulfides, 1,3-dithianes, and disulfides

Author keywords

[No Author keywords available]

Indexed keywords

1,3 DITHIANE DERIVATIVE; ALKENE DERIVATIVE; DISULFIDE; LIGAND; OSMIUM TETRAOXIDE; SULFIDE; SULFUR;

EID: 0028292023     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(00)77045-6     Document Type: Article
Times cited : (30)

References (21)
  • 14
    • 84913065376 scopus 로고    scopus 로고
    • 3.
  • 15
    • 84913077864 scopus 로고    scopus 로고
    • Phenyl cinnamyl sulfone and the diol derived from osmylation of its CC double bond were independently synthesized. These compounds were not observed in the crude reaction mixture of the AD of phenyl cinnamyl sulfide, as judged by TLC.
  • 16
    • 0001262743 scopus 로고
    • Because α,β-unsaturated aldehydes have not proven good substrates for the AD reaction, the high enantioselectivity with this dithiane substrate is promising. Aldehydes protected as acetals have also been shown to be good substrates for the asymmetric dihydroxylation reaction: see
    • (1989) Tetrahedron Lett. , vol.30 , pp. 2041
    • Lohray1    Kalantar2    Kim3    Park4    Shibita5    Wai6    Sharpless7
  • 17
    • 84913058177 scopus 로고    scopus 로고
    • 6) δ 142.2, 139.7, 129.7, 129.0, 128.7, 127.9, 127.6, 127.4, 76.2, 75.9, 36.7, 35.0 ppm; HRMS (FAB) [[Truncated]]
  • 20
    • 84913055555 scopus 로고    scopus 로고
    • Sulfide oxidation is rapid in the presence of stoichiometric amounts of cinchona alkaloid ligand (King, S.B. and Sharpless, K.B. unpublished results). N-Methylmorpholine is known not to catalyze the osmylation of olefins (Jacobsen, E.N., Markó, I.É. and Sharpless, K.B. unpublished results).
  • 21
    • 84913062528 scopus 로고    scopus 로고
    • The reader will no doubt be wondering what the difference is between these osmium-based oxidation systems which so affects the preference for olefin vs. sulfide oxidation or vice versa. A mechanistic rational for this selectivity dichotomy is still elusive, so for the present, we must be content with its synthetic utility which is clear enough.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.