[3+2] Route to Quaternary Oxaprolinol Derivatives as Masked Precursors of Disubstituted β3,β3-Amino Aldehyde. - Shpak‐Kraievskyi, Pavlo; Mankou Makaya, Amelle; Beauchard, Anne; Martel, Arnaud; Laurent, Mathieu Y.; Dujardin, Gilles (European Journal of Organic Chemistry, 2015)