期刊
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
卷 184, 期 5, 页码 1247-1256出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10426500902856347
关键词
Allyl(trichloro)silane; 5; 5'-bis-1; 2; 4-triazines; Diels-Alder; retro-Diels-Alder reaction; diethylzinc; optically active 2; 2'-bipyridine sulfoxides
The direct asymmetric oxidation of 6,6'-bis(alkylsulfanyl)-2,2'-bipyridines 2a-e to non-racemic mono sulfoxides 3a-e and bis-sulfoxides 4a,c-e using either Davis oxaziridine or a modified Sharples reagent is reported. The use of isolated mono- and bis-sulfoxides as chiral auxiliaries was tested in either the asymmetric addition of the diethylzinc or allyl(trichloro)silane to benzaldehyde.
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