57240-61-6Relevant articles and documents
Reactions of Electron-rich Heterocycles with Orthocarboxylic Acid Derivatives, 9. - Acylation of Indole and Methylindoles with Dialkoxycarbenium Tetrafluoroborates
Pindur, Ulf,Flo, Camran,Akguen, Eyuep,Tunali, Mustafa
, p. 1621 - 1627 (2007/10/02)
Indole and some methylindoles 1 were acylated regioselectively with dialkoxycarbenium tetrafluoroborates 2 under mild conditions.The formyl cation equivalent 2a' reacts with excess of indoles 1 to give the bisindolylcarbenium tetrafluoroborates 13a-d.