Beilstein Journal of Organic Chemistry p. 565 - 569 (2011)
Update date:2022-08-05
Topics:
Brand, Jonathan P.
Chevalley, Clara
Waser, Jerome
The Au(III)-catalyzed cyclization of 2-alkynylanilines was combined in a one-pot procedure with the Au(I)-catalyzed C3-selective direct alkynylation of indoles using the benziodoxolone reagent TIPS-EBX to give a mild, easy and straightforward entry to 2-substituted-3-alkynylindoles. The reaction can be applied to unprotected anilines, was tolerant to functional groups and easy to carry out (RT, and requires neither an inert atmosphere nor special solvents).
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