The synthesis of head-to-tail (H–T) dimers of 3-substituted thiophenes by the hypervalent iodine(iii)-induced oxidative biaryl coupling reaction
作者:Toshifumi Dohi、Koji Morimoto、Yorito Kiyono、Akinobu Maruyama、Hirofumi Tohma、Yasuyuki Kita
DOI:10.1039/b503058g
日期:——
The head-to-tail (H-T) dimers could be obtained selectively by the oxidativecouplingreaction of 3-substituted thiophenes using a combination of hypervalentiodine(III) reagents and trimethylsilyl trifluoromethanesulfonate.
Hypervalent iodine(III): selective and efficient single-electron-transfer (SET) oxidizing agent
作者:Toshifumi Dohi、Motoki Ito、Nobutaka Yamaoka、Koji Morimoto、Hiromichi Fujioka、Yasuyuki Kita
DOI:10.1016/j.tet.2009.10.040
日期:2009.12
ethers, affording the corresponding aromatic cation radicals. Since then, hypervalent iodine(III) has been utilized as a selective and efficient SET oxidizingagent that enables a variety of direct C–H functionalizations of aromatic rings in electron-rich arenes under mild conditions. We have now extended the original method to work in a series of heteroaromatic compounds such as thiophenes, pyrroles,