Expeditious Synthesis of 2,3,6-Trisubstituted 2H-1,3-Oxazin-4(3H)-ones via the Tertiary Amine-Induced Reaction of 2-Diazo-3-oxoalkanals and Imines Under Mild Conditions - Qi, Hengzhen; Zhang, Jiantao; Xu, Jiaxi (Synthesis, 2011)