作者:Dieter Enders、Jean-Claude Adelbrecht、Wacharee Harnying
DOI:10.1055/s-2005-872164
日期:——
An efficient asymmetric synthesis of substituted p-alkoxycarbonyl sulfonates is described. Enantiopure α-substituted P-alkoxycarbonyl sulfonates can be obtained via u-alkylation of metalated sulfonates bearing 1,2:5,6-di-O-isopropylidene-u-D-allofuranose as the chiral auxiliary with alkyl bromoacetates. α,β-Di-substituted P-alkoxycarbonyl sulfonates were prepared starting from the corresponding enantiopure
描述了取代的对烷氧基羰基磺酸盐的有效不对称合成。对映体纯 α-取代的 P-烷氧基羰基磺酸盐可以通过以 1,2:5,6-二-O-异亚丙基-uD-别呋喃糖作为手性助剂的金属化磺酸盐与溴代乙酸烷基酯的 u-烷基化来获得。通过使用 TFA 裂解手性助剂并同时引起 Meyer 反应,从相应的对映纯 γ-硝基磺酸盐开始制备 α,β-二取代的 P-烷氧基羰基磺酸盐。