Enantioselective Addition of Amines to Ketenes Catalyzed by a Planar-Chiral Derivative of PPY: Possible Intervention of Chiral Brønsted-Acid Catalysis
摘要:
The first method for the catalytic enantioselective addition of amines (specifically, pyrroles) to ketenes has been developed, and it has been demonstrated that the resulting acylpyrroles can be transformed into a broad spectrum of useful derivatives. On the basis of mechanistic studies, it is suggested that the planar-chiral catalyst plays an unanticipated role in this process as a chiral Brønsted acid.
Catalytic Asymmetric Synthesis of Esters from Ketenes
作者:Sheryl L. Wiskur、Gregory C. Fu
DOI:10.1021/ja0506152
日期:2005.5.1
By building on elementary principles of Brønsted acid-base chemistry, a nucleophile-catalyzed method for the asymmetric synthesis of esters fromketenes has been transformed into a much more versatile and effective Brønsted acid-catalyzed process. The product aryl esters can be converted into useful derivatives, such as enantioenriched alcohols and carboxylic acids.
Dochnahl, Maximilian; Fu, Gregory C., Angewandte Chemie - International Edition, 2009, vol. 48, p. 2391 - 2393
作者:Dochnahl, Maximilian、Fu, Gregory C.
DOI:——
日期:——
Enantioselective Synthesis of Protected Amines by the Catalytic Asymmetric Addition of Hydrazoic Acid to Ketenes
作者:Xing Dai、Takashi Nakai、Jan A. C. Romero、Gregory C. Fu
DOI:10.1002/anie.200700697
日期:2007.6.4
Catalytic Asymmetric Couplings of Ketenes with Aldehydes To Generate Enol Esters
作者:Carsten Schaefer、Gregory C. Fu
DOI:10.1002/anie.200501434
日期:2005.7.18
Enantioselective Addition of Amines to Ketenes Catalyzed by a Planar-Chiral Derivative of PPY: Possible Intervention of Chiral Brønsted-Acid Catalysis
作者:Brian L. Hodous、Gregory C. Fu
DOI:10.1021/ja027466x
日期:2002.8.1
The first method for the catalytic enantioselective addition of amines (specifically, pyrroles) to ketenes has been developed, and it has been demonstrated that the resulting acylpyrroles can be transformed into a broad spectrum of useful derivatives. On the basis of mechanistic studies, it is suggested that the planar-chiral catalyst plays an unanticipated role in this process as a chiral Brønsted acid.