A General Approach to Selective Functionalization of 1,2,4-Triazines Using Organometallics in Palladium-Catalyzed Cross-Coupling and Addition Reactions
A selective way to obtain disubstituted 1,2,4-triazines in good yields by combining addition reactions and palladium-catalyzed cross-coupling reactions of organometallics with 3-methylsulfanyl-1,2,4-triazine is described.
efficient and original palladium-catalyzed amination of 5-Aryl-1,2,4-triazines and 1,2,4,5-tetrazines is reported. This Buchwald–Hartwig type reaction leads to the formation of aminated heterocycles via methylsulfur release. The reaction is optimized and a wide range of amines is used to determine the scope and limitations of this methodology.
Synthesis and Anti-Inflammatory Evaluation of 3-Methylthio-1,2,4-Triazines, 3-Alkoxy-1,2,4-Triazines, and 3-Aryloxy-1,2,4-Triazines
作者:William P. Heilman、R.D. Heilman、James A. Scozzie、R.J. Wayner、James M. Gullo、Zaven S. Ariyan
DOI:10.1002/jps.2600690310
日期:1980.3
the 25 compounds were selected for dose-response evaluation in the carrageenan assay based on their relative toxicity and anti-inflammatory activity. Neurotoxicity of the 13 triazines was estimated by determination of NTD50 values in mice. Five of the 13 compounds tested in the dose-response assay were active in terms of anti-inflammatory efficacy (ED50 values) and lack of overt neurotoxicity (NTD50 values)