Intramolecular cyclization of ortho-alkynylanilines by Rh(I)-catalyzed hydroamination to yield benzo(dipyrroles)
摘要:
The methylene-bridged Rh(1) dicarbonyl complex, [Rh(bim)(CO)(2) BPh4 (1) (bim = bis(N-methylimidazol-2-yl)methane), is an effective catalyst for the intramolecular hydroamination of selected ortho-alkynylanilines to give a range of benzo(dipyrroles). (C) 2009 Elsevier Ltd. All rights reserved.
Intramolecular cyclization of ortho-alkynylanilines by Rh(I)-catalyzed hydroamination to yield benzo(dipyrroles)
摘要:
The methylene-bridged Rh(1) dicarbonyl complex, [Rh(bim)(CO)(2) BPh4 (1) (bim = bis(N-methylimidazol-2-yl)methane), is an effective catalyst for the intramolecular hydroamination of selected ortho-alkynylanilines to give a range of benzo(dipyrroles). (C) 2009 Elsevier Ltd. All rights reserved.
A wide range of o-alkynylanilines undergo a copper-catalyzed direct C-H/N-H coupling with azoles followed by benzannulation to form the corresponding N-azolylindoles in good yields. The domino reaction proceeds effectively with molecular oxygen as the sole oxidant and provides a new dehydrogenative access to the titled compounds of interest in pharmaceutical and material sciences.
Intramolecular cyclization of ortho-alkynylanilines by Rh(I)-catalyzed hydroamination to yield benzo(dipyrroles)
作者:Guy K.B. Clentsmith、Leslie D. Field、Barbara A. Messerle、Adelle Shasha、Peter Turner
DOI:10.1016/j.tetlet.2009.01.060
日期:2009.4
The methylene-bridged Rh(1) dicarbonyl complex, [Rh(bim)(CO)(2) BPh4 (1) (bim = bis(N-methylimidazol-2-yl)methane), is an effective catalyst for the intramolecular hydroamination of selected ortho-alkynylanilines to give a range of benzo(dipyrroles). (C) 2009 Elsevier Ltd. All rights reserved.