Unusual asymmetric oxidation of sulfide; the diastereoselective oxidation of prochiral sulfide-chiral acid salt with hydrogen peroxide without metal
作者:Tomomi Ikemoto、Atsuko Nishiguchi、Tatsuya Ito、Hiroyuki Tawada
DOI:10.1016/j.tet.2005.03.036
日期:2005.5
The sulfide 4 was treated with chiral acid in a mixture of toluene and methyl iso-butylketone to precipitate the salt, which reacted with 30% H2O2 for 3 weeks at rt. The resulting crystals were collected followed by recrystallization to give the salt of enantiometrically pure sulfoxide and chiral acid 7 in 72% yield and 98.1% de, which was led to chiral sulfoxide S-3 after neutralization. Sulfoxide S-3 was led to S-1a as the candidate for an orally active HIV-1 therapeutic agent. (c) 2005 Elsevier Ltd. All rights reserved.