Decarboxylation of α-Amino Acids Containing Two and Three Stereogenic Centers: A Simple One-Step Procedure to Prepare two Optically Active β-Amino Alcohols and a Bicyclic Pyrrolidine Derivative

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Abstract
The decarboxylation of L-threonine (2S,3R)-1, L-hydroxyproline (2S,4R)-2 and D-2-azabicyclo[3.3.0]octan-3-carboxylic acid (1R,3R,5R)-5 yield in a simple one-step procedure the corresponding optically active β-amino alcohols (R)-3 and (R)-4 and the bicyclic pyrrolidine derivative (1R,5R)-6 in 72–82% yield and >99% ee.