The first approach to optically active 2,2′-bipyridine alkyl sulfoxides

The synthesis of 6,6 '-bis(alkylsulfanyl)-2,2 '-bipyridines and their asymmetric oxidation to non-racemic 2,2'-bipyridine alkyl sulfoxides using either (+)-(8,8-dichlorocamphorylsulfonyl)oxaziridine or a modified Sharpless reagent is reported. (c) 2007 Elsevier Ltd. All rights reserved.