A tandem radical cyclization approach to 3-(2-oxopyrrolidin-3-yl)indolin-2-ones, potential intermediates toward complex indole-heterocycles
摘要:
A series of substituted 3-(2-oxopyrrolidin-3-yl)indolin-2-one derivatives have been synthesized by tris(trimethylsilyl)silane (TTMSS) induced tandem radical cyclization as key step. (c) 2007 Elsevier Ltd. All rights reserved.
Asymmetric radical cyclization reactions of axially chiral N-allyl-o-iodoanilides to form enantioenriched N-acyl dihydroindoles
作者:Dennis P. Curran、Christine H.-T. Chen、Steven J. Geib、AndreJ.B. Lapierre
DOI:10.1016/j.tet.2004.02.064
日期:2004.5
Radicalcyclizations of enantiomerically enriched N-allyl-o-iodoanilides provide N-acyl-3-alkyl-2,3-dihydroindoles in good yields and with good to excellent levels of chiralitytransfer from the N–Ar axis to the new stereocenter. In competitive cyclizations of N-acryloyl-N-allyl-o-iodoanilides, the addition of an o-methyl group reverses the regioselectivity of the radicalcyclization from the acryloyl
A palladium-catalyzed tandem cyclization-cross-coupling reaction using indolylborate as a transfer agent
作者:Minoru Ishikura、Norinobu Takahashi、Koji Yamada、Reiko Yanada
DOI:10.1016/j.tet.2006.09.065
日期:2006.12
Investigation of the palladium-catalyzed tandem cyclization-cross-coupling reaction using indolylborate (2) as a transfer agent has been carried out. Furthermore, the cross-coupling reaction performed under carbon monoxide led to the generation of indolyl ketones. (c) 2006 Elsevier Ltd. All rights reserved.