Synthesis of 1,2,3,4-Tetrazine Derivatives via [4+2] Cycloaddition of α-Halo- N-acylhydrazones with Diazodicarboxylates
Suo Yongbo, Xie Mingsheng, Chen Yangguang, Zhang Yiming, Guo Zhen, Li Jianping, Qu Guirong, Guo Haiming
Chin. J. Org. Chem. . 2016, (3): 540 -546 .  DOI: 10.6023/cjoc201511001