Catalytic alkene cyclohydroamination via an imido mechanism
作者:Andrew L. Gott、Adam J. Clarke、Guy J. Clarkson、Peter Scott
DOI:10.1039/b718373a
日期:——
Chiral-at-metal half-sandwich diamide complexes catalyse enantioselective cyclohydroamination of aminoalkenes at unexpectedly high rates given their high coordination number and steric bulk; substantial evidence is presented which argues against the established σ-bond insertion process and is strongly indicative of an imido [2+2] cycloaddition mechanism.
Bai, Yueniu; Roesky, Herbert W.; Noltemeyer, Mathias, Chemische Berichte, 1992, vol. 125, # 4, p. 825 - 832
作者:Bai, Yueniu、Roesky, Herbert W.、Noltemeyer, Mathias、Witt, Michael
DOI:——
日期:——
Mechanism of Catalytic Cyclohydroamination by Zirconium Salicyloxazoline Complexes
作者:Laura E. N. Allan、Guy J. Clarkson、David J. Fox、Andrew L. Gott、Peter Scott
DOI:10.1021/ja106588m
日期:2010.11.3
hydroamination/cyclization of primary aminoalkenes by catalysts based on Cp*LZr(NMe(2))(2) (L = κ(2)-salicyloxazoline) is investigated in a range of kinetic, stoichiometric, and structural studies. The rate law is found to be d[substrate]/dt = k[catalyst](1)[substrate](0) for all catalysts and aminoalkenes studied. The overall rate is similar for formation of five- and six-memberedrings, and a substantial