An Improved Synthesis of Optically Pure 4-Boc-5,6-Diphenylmorpholin-2-one and 4-Cbz-5,6-Diphenylmorpholin-2-one - Dastlik, Kim A; Sundermeier, Uta; Johns, Deidre M; Chen, Yuyin; Williams, Robert M (Synlett, 2005)