Ru(<scp>ii</scp>)-Catalysed synthesis of (1<i>H</i>)-isothiochromenes by oxidative coupling of benzylthioethers with internal alkynes
作者:Esteban P. Urriolabeitia、Sara Ruiz
DOI:10.1039/c8ob03201g
日期:——
been achieved. The reaction occurs by S-directed C–H activation at the ortho position of the aryl ring, promoted by ruthenium, migratory insertion of the alkyne, 1,2-thio-Wittig rearrangement of the tert-butyl group and reductive elimination by C–S coupling between the resulting anionic sulfide and the vinylic carbon.
通过Ru(II)催化的苄基(叔丁基)硫醚与内部炔烃的氧化偶合,已经完成了1 H-异硫杂环庚烯的合成。反应通过芳基环邻位的S定向C–H活化,钌促进,炔烃的迁移插入,叔丁基的1,2-硫代-维蒂希重排以及C–的还原消除而发生所得的阴离子硫化物和乙烯基碳之间的S偶联。