2,5-Dihydro-1H-1,2,4-triazol-2-yl radicals: Syntheses and properties
摘要:
A range of 2,5-dihydro-1H-1,2,4-triazol-2-yl radicals 2b-p has been prepared by dehydrogenation of the corresponding 4,5-dihydro-1H-1,2,4-triazoles 5b-p which have been synthesized using various methods. EPR, ENDOR and NMR studies have led to a complete analysis and full assignment of all hyperfine coupling constants. The pi-SOMO, having a node at the C(3) methine carbon, is mainly confined to the nitrogens of the five-membered ring, particularly to those of the hydrazyl moiety.
Synthesis and Antimicrobial Evaluations of Some Novel Mono-, Bis-, and Tris-Nitro-1,2,4-Triazines
作者:Mardia Telep El Sayed、Hoda Abdel Rauof Hussein、Dalia Ahmed Osman
DOI:10.1002/jccs.201600097
日期:2017.1
Substituted‐1,2,4‐triazines were conveniently synthesized in one pot by the cyclization of arylnitroformaldehyde hydrazone derivatives 1 and 5 with different primary amines in ~37% formaldehyde solution. The synthesized compounds were arranged into novel mono‐, bis‐, and tris‐nitro‐1,2,4‐triazine derivatives 2, 3, 4, 6, and 7. The antibacterial and antifungal activity of the synthesized compounds were