Asymmetric Alkylation of N-Toluenesulfonylimines with Dialkylzinc Reagents Catalyzed by Copper-Chiral Amidophosphine
Takahiro Soeta, Kazushige Nagai, Hidetaka Fujihara, Masami Kuriyama and Kiyoshi Tomioka*
*Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida,
Sakyo-ku, Kyoto 606-8501, Japan, Email: tomioka
pharm.kyoto-u.ac.jp
T. Soeta, K. Nagai, H. Fujihara, M. Kuriyama, K. Tomioka, J. Org. Chem., 2003, 59, 9655-9659.
DOI: 10.1021/jo035234q
Abstract
Various N-toluenesulfonylimines were successfully ethylated with diethylzinc in the presence of copper(II) ditriflate and a chiral amidophosphine ligand in toluene to give the corresponding N-toluenesulfonylamides in good yields and high enantioselectivity.
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Key Words
ID: J42-Y2003-940
