Hydrosilylation-Promoted Furan Diels–Alder Cycloadditions with Stereoselectivity Controlled by the Silyl Group
作者:Zhi-Yun Liu、Ming Zhang、Xiao-Chen Wang
DOI:10.1021/jacs.9b11909
日期:2020.1.8
unprecedented B(C6F5)3-catalyzed cascade reaction of N-allyl-N-furfurylamides involving an initial intramolecularfuranDiels-Alderreaction and subsequent ether cleavage. The reaction has a broad substrate scope, even tolerating a trialkyl-substituted olefin as the dienophile, which has not previously been observed with conventional furanDiels-Alderreactions. In addition, the relative configuration
Ring-Rearrangement Metathesis (RRM) Mediated by Ruthenium-Indenylidene Complexes
作者:Hervé Clavier、Julie Broggi、Steven P. Nolan
DOI:10.1002/ejoc.200901316
日期:2010.2
Several ruthenium-indenylidenecomplexes bearing N-heterocyclic carbenes (NHCs) and phosphanes have been investigated for the ring rearrangement of cyclic compounds by alkene metathesis. These catalysts were found to promote efficiently such domino reactions, especially sterically hindered NHC-containing complexes. Moreover, indenylidene-type catalysts were compared to benzylidene- and Hoveyda-type
Cascade of the Hinsberg / IMDAF reactions in the synthesis 2-arylsulfonyl-3a,6-epoxyisoindoles and 4a,7-epoxyisoquinolines in water
作者:Maryana A. Nadirova、Anastasia V. Khanova、Fedor I. Zubkov、Dmitriy F. Mertsalov、Irina A. Kolesnik、Sergey K. Petkevich、Vladimir I. Potkin、Anton A. Shetnev、Sofia I. Presnukhina、Anna A. Sinelshchikova、Mikhail S. Grigoriev、Vladimir P. Zaytsev
DOI:10.1016/j.tet.2021.132032
日期:2021.4
formation of a 3a,6-epoxyisoindole core in one synthetic stage. Usually, in boiling water, the interaction sequence involves two consecutive steps: the Hinsberg reaction and the intramolecular Diels–Alder furanе (IMDAF) reaction. The scope and limitations of the proposed method were thoroughly investigated, and it was revealed that the key [4 + 2] cycloaddition step proceeds through an exo-transition state