✍ Scribed by Satoshi Kikuchi; Yukihiko Hashimoto
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## Abstract A novel method for the asymmetric synthesis of __α__,__β__‐diamino acids by using the 2,3,4,6‐tetra‐__O__‐pivaloyl‐__β__‐D‐glucopyranosyl group (Piv~4~Glc) as chiral auxiliary was developed (__Table__ and __Scheme__). The reaction was promoted by CuBr⋅Me~2~S as __Lewis__ acid, and high
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## Abstract A solvent‐free, catalytic, one‐pot synthesis of β‐lactams is described. The reaction involves the reaction between silyl ketene thioacetals derived from 2‐pyridyl thioesters and imines at room temperature in the presence of catalytic amounts of Sc(OTf)~3~ and in the absence of solvent.