Chiral non-racemic dihydroxysulfones via hydrolytic kinetic resolutions—synthesis of oxacyclic ring systems using intramolecular acylation strategies
作者:Chunyang Jin、Raina D. Ramirez、Aravamudan S. Gopalan
DOI:10.1016/s0040-4039(01)00856-5
日期:2001.7
have been prepared in good yields and high enantiomeric excesses by hydrolytic kinetic resolution of the corresponding epoxysulfones with Jacobsen's (S,S)-salen(Co)III(OAc) catalyst. The intramolecular cyclization reactions of the acyl and ethoxycarbonyl derivatives of these dihydroxysulfones have been exploited to access a variety of functionalized chiral non-racemic cyclic ethers and lactones in good
通过用雅各布森的(S,S)-salen(Co)III(OAc)催化剂水解动力学拆分相应的环氧砜,已经以高收率和高对映体过量制备了许多手性非外消旋的1,2-二羟基砜。这些二羟基砜的酰基和乙氧基羰基衍生物的分子内环化反应已被用来以良好的产率获得各种官能化的手性非外消旋环醚和内酯。