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.
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
Hydration reactivity of persistent conjugated ketenes
作者:Annette D. Allen、Andrew Stevenson、Thomas T. Tidwell
DOI:10.1021/jo00273a013
日期:1989.6
ALLEN, ANNETTE D.;BAIGRIE, LYNN M.;GONG, LEYI;TIDWELL, THOMAS T., CAN. J. CHEM., 69,(1991) N, C. 138-145
作者:ALLEN, ANNETTE D.、BAIGRIE, LYNN M.、GONG, LEYI、TIDWELL, THOMAS T.