A novel Catellani-type conversion is reported using aryl-thianthreniums (aryl-TTs) instead of aryl halides. Three classes of ortho-dual C–H functionalization involving alkylation, amination, and deuterated methylation and five types of ipso-operation including alkenylation, cyanation, methylation, hydrogenation, and alkynylation all proceed well in this procedure. In this conversion, aryl-TTs exhibit satisfactory reactivity and feature the advantage that the leaving TT unit can be recovered. More strikingly, this finding represents a new chemistry conversion of aryl-TTs, wherein contiguous tri-functionalization in a single chemical manipulation is realized.

中文翻译：

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钯/降冰片烯催化芳基噻烯的多样化三官能化

据报道，使用芳基噻烯鎓（芳基-TT）代替芳基卤化物进行了新型 Catellani 型转化。涉及烷基化、胺化和氘代甲基化的三类邻位双C-H官能化和包括烯基化、氰化、甲基化、氢化和炔基化的五种类型的原位操作在此过程中均进展顺利。在此转化中，芳基-TT表现出令人满意的反应活性，并具有可以回收留下的TT单元的优点。更引人注目的是，这一发现代表了芳基-TT的一种新的化学转化，其中在单一化学操作中实现了连续三官能化。