A highly efficient catalytic dearomatization of indoles via visible-light photocatalysis is presented. The common indole tethered alcohol at the N1 or C2 position reacts in a cascade fashion, providing facile access to diverse indolone scaffolds.
Two sequential metal-catalyzed transformations, involving [In]-catalyzed Friedel Crafts type addition of spiroaminol carbon to indole C3 followed by [Rh]-catalyzed dehydrogenative cyclization of the resulting gamma-amino alcohol culminated in the construction of the central tricyclic core isatisine A. The overall strategy employed three easily available starting compounds and delivered the complex tricyclic core in four steps with all four steps being catalytic in nature. (C) 2013 Elsevier Ltd. All rights reserved.
Divergent Pd(ii) and Au(iii) mediated nitroalkynol cycloisomerizations
作者:Pitambar Patel、Chepuri V. Ramana
DOI:10.1039/c0ob00858c
日期:——
A new cycloisomerization reaction comprising the simultaneous addition of nitro and alcohol groups across CC leading to skeletally diverse small molecules is documented.
记录了一种新的环异构化反应,该反应包括在 CC 上同时添加硝基和醇基,从而产生骨架多样化的小分子。
Buller, Matthew J.; Cook, Travis G.; Kobayashi, Yoshihisa, Heterocycles, 2007, vol. 72, p. 163 - 166
作者:Buller, Matthew J.、Cook, Travis G.、Kobayashi, Yoshihisa