Asymmetric oxidation of 1,3-dithiolanes. A route to the optical resolution of carbonyl compounds
作者:O Bortolini、F Di Furia、G Licini、G Modena、M Rossi
DOI:10.1016/s0040-4039(00)85446-5
日期:1986.1
The asymmetric oxidation (-BuO2H, Ti(OPr-)4, DET) of a series of 1,3-dithiolanes was carried out to produce the corresponding S-oxides with high chemical and optical yields. By contrast, the oxidation of 1,3-dithianes and 1,3-oxathiolane prepared from the same carbonyl compounds gave much lower optical yields. The optical resolution of the model ketone, dl-menthone, a) 1,3-dithiolane formation b) asymmetric
进行了一系列1,3-二硫杂环戊烷的不对称氧化(-BuO 2 H,Ti(OPr- )4,DET),以化学和光学收率较高的方式生产相应的S-氧化物。相比之下,由相同的羰基化合物制备的1,3-二硫杂环戊烷和1,3-氧杂硫杂环戊烷的氧化产生的光学产率要低得多。描述了模型酮dl-薄荷酮的光学分辨率,a)1,3-二硫杂环戊烷的形成b)不对称S-氧化c)色谱非对映体分离d)羰基的再生(93%光学收率)。