Bi(OTf)<sub>3</sub>-Catalyzed One-Step Catalytic Synthesis of <i>N</i>-Boc or <i>N</i>-Cbz Protected α-Branched Amines
作者:Jaray Jaratjaroonphong、Surisa Tuengpanya、Sureeporn Ruengsangtongkul
DOI:10.1021/jo502540k
日期:2015.1.2
In this paper, N-Boc and N-Cbz protected alpha-branched amines are synthesized directly from commercially available aromatic/heteroaromatic compounds, aldehydes, and tert-butyl or benzyl carbamate bearing a variety of substituents. Bismuth(III) triflate is found to be a highly effective catalyst for this one-pot, three-component coupling reaction. In addition, the use of mild reaction conditions, low catalytic loading, easy removal of the N-protective group, and one-step synthesis under open-flask are advantages of the present procedure.