The cooperative FeCl3/DDQ system for the regioselective synthesis of 3-arylindoles from β-monosubstituted 2-alkenylanilines
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 the 1,2-aryl migratory process.
Jang, Su San,Youn, So Won
p. 2200 - 2204
(2016/03/01)
Gold- and indium-catalyzed synthesis of 3- and 6-sulfonylindoles from ortho-alkynyl-N-sulfonylanilines
(Chemical Equation Presented) Consecutive formation of C-N and C-S bonds: The gold-catalyzed intramolecular aminosulfonylation of 2-alkynyl-N- sulfonylanilines 1 (R1 = H) produces 3-sulfonylindoles 2 in good to high yields, whereas the indium-c
Synthesis of ring-A-substituted tryptophan by a palladium-catalyzed heteroannulation reaction
Coupling of substituted o-iodoanilines with methyl (S)-2-N,N-di-tert- butoxycarbonyl-5-oxo-pentanoate, derived from glutamic acid, in DMF in the presence of palladium acetate and DABCO provides substituted tryptophans in good to excellent yields. Georg Thieme Verlag Stuttgart.
Jia, Yanxing,Zhu, Jieping
p. 2469 - 2472
(2007/10/03)
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