A Diacetate Ketone-Catalyzed Asymmetric Epoxidation of Olefins
作者:Bin Wang、Xin-Yan Wu、O. Andrea Wong、Brian Nettles、Mei-Xin Zhao、Dajun Chen、Yian Shi
DOI:10.1021/jo900330n
日期:2009.5.15
A fructose-derived diacetate ketone has been shown to be an effective catalyst for asymmetricepoxidation. High ee values have been obtained for a variety of trans and trisubstituted olefins including electron-deficient α,β-unsaturated esters as well as certain cis olefins.
果糖衍生的二乙酸酮已被证明是不对称环氧化的有效催化剂。各种反式和三取代烯烃(包括缺电子 α,β-不饱和酯以及某些顺式烯烃)都获得了高 ee 值。
Mechanistic Investigation of the Ru-Catalyzed Hydroamidation of Terminal Alkynes
作者:Matthias Arndt、Kifah S. M. Salih、Andreas Fromm、Lukas J. Goossen、Fabian Menges、Gereon Niedner-Schatteburg
DOI:10.1021/ja111389r
日期:2011.5.18
The ruthenium-catalyzed hydroamidation of terminalalkynes has evolved to become a broadly applicable tool for the synthesis of enamides and enimides. Depending on the catalyst system employed, the reaction leads chemo-, regio-, and stereoselectively to a single diastereoisomer. Herein, we present a comprehensive mechanistic study of the ruthenium-catalyzed hydroamidation of terminalalkynes, which
Ru-Catalyzed Anti-Markovnikov Addition of Amides to Alkynes: A Regio- and Stereoselective Synthesis of Enamides
作者:Lukas J. Gooßen、Jan E. Rauhaus、Guojun Deng
DOI:10.1002/anie.200462844
日期:2005.6.27
Ru-Catalyzed Stereoselective Addition of Imides to Alkynes
作者:Lukas J. Goossen、Mathieu Blanchot、Claus Brinkmann、Käthe Goossen、Ralph Karch、Andreas Rivas-Nass
DOI:10.1021/jo061966h
日期:2006.12.1
A catalyst system formed in situ from bis(2-methylallyl)cycloocta- 1,5-dieneruthenium(II) ((cod)Ru[met](2)), a phosphine, and scandium(III) trifluoromethanesulfonate (Sc-(OTf)(3)) was found to efficiently catalyze the anti-Markovnikov addition of imides to terminal alkynes, allowing mild and atom-economic synthesis of enimides. Depending on the phosphine employed, both the (E)- and the (Z)-isomer can be accessed stereoselectively.