Cu(OTf)2/HFIP catalyzed regioselective cycloisomerization of indole-C3-functionalized alkynols to carbazoles
摘要:
We report here a simple and atom economic cycloisomerization reaction of indole-tethered alkynols for constructing diverse carbazoles via 1,2-alkly migration using Cu(OTf)2/HFIP as the excellent promoter system.
I2-promoted direct one-pot synthesis of 2,2-bisindolyl-1-arylethanones from multiform substrates arylethenes, 2-hydroxy-aromatic ketones, and carbinols
摘要:
An I-2-promoted domino protocol was developed to construct 2,2-bisindolyl-1-arylethanones from multiform substrates arylethenes, 2-hydroxy-aromatic ketones, and carbinols via three distinct pathways. Through a logical coupled oxidation/Friedel-Crafts alkylation domino process, a variety of 2,2-bisindolyl-1-arylethanones were synthesized in one-pot. (C) 2013 Elsevier Ltd. All rights reserved.