Bi(OTf) 3 -mediated intramolecular hydroamination of 2-aminostilbenes for the synthesis of 2-arylindolines
作者:So Won Youn、Su San Jang、So Ra Lee
DOI:10.1016/j.tet.2016.06.063
日期:2016.8
An efficient Bi(OTf)(3)-mediated intramolecular hydroamination of 2-aminostilbenes for the synthesis of various 2-arylindolines has been developed. Various advantages using Bi(OTf)(3) as a catalyst, such as the operationally easy, simple, and safe procedure, good to excellent chemical yields, and the use of relatively low catalyst loading are noteworthy. (C) 2016 Elsevier Ltd. All rights reserved.
Heptadecafluorooctanesulfonic acid (C8F17SO3H) catalyzed intramolecular hydroamination of olefinic sulfonamides in fluorous biphase system (FBS)
作者:Yan Yin、Gang Zhao
DOI:10.1016/j.jfluchem.2006.09.012
日期:2007.1
A practical, efficient, and environmentally benign intramolecular hydroamination of olefinic sulfonamides was carried out in fluorous biphase system (FBS) using commercially available heptadecafluorooctanesulfonic acid (C8F17SO3H) as a catalyst and perfluorodecaline (C10F18, cis- and trans- mixture) as a fluorous solvent to produce the corresponding cyclic products in good yields. The Bronsted acid of C8F17SO3H is easily recovered and recycled at least five times. (c) 2006 Elsevier B.V. All rights reserved.
Synthesis of Indolines and Quinoline via Cyclization of N-Arylsulfonyl-2-allylanilines Catalyzed by Brønsted Acid
作者:Gang Zhao、Yan Yin
DOI:10.3987/com-05-10547
日期:——
The cooperative FeCl<sub>3</sub>/DDQ system for the regioselective synthesis of 3-arylindoles from β-monosubstituted 2-alkenylanilines
作者:Su San Jang、So Won Youn
DOI:10.1039/c6ob00074f
日期:——
A highly regioselective synthesis of 3-arylindoles by using the cooperative FeCl3/DDQ system has been developed. This new protocol represents an attractive route for the synthesis of 3-arylindoles from readily accessible non-indole precursors, β-aryl-substituted 2-styrylanilines, using an inexpensive catalyst and oxidant. Noteworthy is the unique synergetic and synergistic effect of FeCl3 and DDQ on