M2+ and Ln3+-catalyzed synthesis of a [1,2,4]triazine core via intramolecular C-H/N-H functionalization and C-N bond formation (M = Mn, Zn, Cd; Ln = Dy, Tb)Electronic supplementary information (ESI) available: 1H NMR spectra, X-ray data and crystal structures of 1-5, photoluminescent spectra of 2-6, and fluorescent images of 2-6. CCDC 940757-940760 and 979363 for 5. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c4nj01027b

• Main Authors: Chen, Wen-Bin, Li, Zhi-Xin, Yu, Xin-Wei, Yang, Meng, Qiu, Yan-Xuan, Dong, Wen
• Format: Article
• Language: English
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/c4nj01027b

A novel approach for the direct synthesis of a 1,2,4-triazine core starting from eight azo conjugated aromatic compounds, 5-azo-(1,2,4-triazolyl) salicylic acid, 5-azo-(3-methyl-1,2,4-triazolyl) salicylic acid, 5-azo-(3-carboxyl-1,2,4-triazolyl) salicylic acid, 5-azo-(1,2-pyrazolyl) salicylic acid, 4-azo-(1,2,4-triazolyl) phenol, 4-azo-(3-carboxyl-1,2,4-triazolyl) phenol, 4-azo-(1,2-pyrazolyl) phenol, and 5-azo-(1,2,4-triazolyl) acetylsalicylic acid, via transition or lanthanide metal catalyzed intramolecular C-H/N-H functionalization and C-N bond formation has been developed under one-step hydrothermal synthetic conditions. A novel approach for the direct construction of a 1,2,4-triazine core via metal catalyzed intramolecular C-H/N-H functionalization has been developed.