Synthesis of 3-acyl-5,6-dihydro-1,4-oxathiines through ring expansion of thiiranes
作者:Xingpeng Chen、Jiaxi Xu
DOI:10.1016/j.tetlet.2017.03.039
日期:2017.4
Synthesis of 3-acyl-5,6-dihydro-1,4-oxathiines has been achieved via reactions of thiiranes and α-diazo-β-1,3-dicarbonyl compounds under microwave and copper sulfate-assisted conditions. The current method provides a direct and simple strategy in efficient preparation of 3-acyl-1,4-oxathiines from readily available thiiranes and trans-3-acyl-5,6-dihydro-1,4-oxathiines as stereospecific products for
在微波和硫酸铜辅助条件下,通过硫烷和α-重氮-β-1,3-二羰基化合物的反应,已经完成了3-酰基-5,6-二氢-1,4-氧杂蒽的合成。目前的方法提供了一种直接,简单的策略,可以从现成的噻喃类化合物和反式-3-酰基-5,6-二氢-1,4-氧杂蒽酮中高效制备3-酰基-1,4-氧杂蒽酮,这些化合物可用于1, 2-二取代的顺式-硫杂环丁烷。还提出了反应机理。