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- W1958200795 abstract "Picolinamide–cinchona organocatalysts for the successful enantioselective reduction of ketomines were developed. For the first time, a new type of chiral Lewis base, a cationic species, is reported to efficiently organocatalyze the addition of trichlorosilane to imines. Excellent yields with good to high enantioselectivities (up to 91 %) were obtained in the reduction of differently substituted substrates. Noteworthy, remarkably high turnover frequencies for the hydrosilylation of imines were observed; the catalyst of choice proved to be active even at a loading of only 1 mol-%. The loading was further reduced to 0.5 mol-%, and for very short reaction times (15 min) very impressive asymmetric catalyst efficiency speed values were reached." @default.
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- W1958200795 date "2014-10-15" @default.
- W1958200795 modified "2023-10-03" @default.
- W1958200795 title "Cinchona-Derived Picolinamides: Effective Organocatalysts for Stereoselective Imine Hydrosilylation" @default.
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- W1958200795 doi "https://doi.org/10.1002/ejoc.201403180" @default.
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