The present invention provides a process for producing a compound of the formula (III): ##STR1## wherein R.sup.1 and R.sup.3 are independently hydrogen or an organic group; R.sup.2 is an organic group; and R.sup.4 is an optionally substituted aryl. by reacting the compound of formula (I): ##STR2## wherein R.sup.1, R.sup.2, and R.sup.3 are as defined above, with the compound of formula (II): R.sup.4 --S--Hal (II) wherein R.sup.4 is as defined above and Hal is halogen, in the presence of base.
本发明提供了一种制备化合物的方法,其
化学式为(III):##STR1## 其中R.sup.1和R.sup.3独立地表示氢或有机基团;R.sup.2表示有机基团;R.sup.4表示可选地取代的芳基。通过将具有
化学式(I)的化合物:##STR2## 其中R.sup.1、R.sup.2和R.sup.3如上定义,与具有
化学式(II)的化合物反应(R.sup.4 --S--Hal (II)),其中R.sup.4如上定义,Hal是卤素,在碱存在下进行反应。