Efficient One-Pot Synthesis of Diphenyl-2,4-dioxa-8,10-diazaspiro-[5.5]undecane-1,5,9-trione Derivatives under Solvent-Free and Catalyst-Free
Xu Zhaohui, Zhou Peng, Lin Chunhua, Liu Deyong
Chin. J. Org. Chem. . 2016, (8): 1948 -1953 .  DOI: 10.6023/cjoc201601032