Radical Philicity Inversion in Co- and Fe-Catalyzed Hydrogen-Atom-Transfer-Initiated Cyclizations of Unsaturated Acylsilanes
作者:Bin Wu、Rong Zhu
DOI:10.1021/acscatal.9b04774
日期:2020.1.3
hydrogen-atom-transfer reactions involving unsaturated acylsilanes. Guided by the same concept, we have explored two transformations, namely, a Co-catalyzed cycloisomerization reaction and a Fe-catalyzed cyclization/Giese addition reaction. Both reactions involve the generation of a versatile α-siloxy radical intermediate via concomitant philicity inversion and radical translocation, which is mechanistically
Diastero- and enantioselective intramolecular carbometalation reaction
作者:Rozalia Unger、Theodore Cohen、Ilan Marek
DOI:10.1016/j.tet.2010.04.038
日期:2010.6
The zinc-catalyzed addition of various alkynes to acylsilanes followed by a Zn-Brook rearrangement and either the Zn-ene-allene or Zn-yne-allene cyclization led to the enantio- and diastereoselective formation of carbocycles in a single-pot operation. (C) 2010 Elsevier Ltd. All rights reserved.