Gold(I)-Catalyzed Enantioselective Hydroamination ofN-Allenyl Carbamates
Organic Letters2007Vol. 9(15), pp. 2887–2889
Citations Over TimeTop 10% of 2007 papers
Abstract
Treatment of the N-4,5-hexadienyl carbamate 2a with a catalytic 1:2 mixture of [(S)-1]Au2Cl2 [(S)-1 = (S)-3,5-t-Bu-4-MeO-MeOBIPHEP] and AgClO4 in m-xylene at -40 degrees C for 24 h led to isolation of 2-vinylpyrrolidine 3a in 97% yield with 81% ee. Gold(I)-catalyzed enantioselective hydroamination was effective for a number of carbamate groups and tolerated terminal disubstitutution of the allenyl moiety.
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