A Facile Synthesis of tert-Butyl 2-[(Benzyloxycarbonyl)amino]-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)propionate: An Orthogonally Protected Boronic Acid Analog of Aspartic Acid - Hsiao, Gary K; Hangauer, David G (Synthesis, 1998)