Synthesis of C3-substituted enantiopure 2-(p-tolylsulfinyl)-furans: the sulfoxide group as a chiral inductor for furan dienes as precursors of a wide variety of chiral intermediates
作者:Ángel M. Montaña、Pedro M. Grima、Consuelo Batalla、Gabriele Kociok-Köhn
DOI:10.1016/j.tetasy.2014.03.013
日期:2014.4
(−)-(1R,2S,5R)-Menthyl (SS)-p-toluenesulfinate and its enantiomer are a common source for a chiral sulfoxide group in organic synthesis, by means of nucleophilic substitution. The replacement of the menthyloxy group, with complete inversion of configuration at the sulfur center of the chiral sulfoxide, allows the inclusion of this organic function into numerous substrates, with defined stereochemistry
( - ) - (1 - [R,2小号,5 - [R )-薄荷基(小号小号) - p-toluenesulfinate及其对映体是用于在有机合成手性亚砜基团,通过亲核取代的手段的共用源极。更换孟氧基团的,与手性亚砜的硫中心配置的完整反转,允许包含该有机功能的成无数基底,具有限定立体化学和高对映体纯度。九C3取代的,对映体纯,2- sulfinylfurans通过此合成方法制备的较高产率。这些对映体纯的C3-取代的2-亚磺酰基呋喃可用作[4 + 3]环加成反应和其他化学转化中的手性二烯,在这些化学转化中,应诱导π-表面选择性以获得对映选择性反应。