Application of 40253-47-2,Some common heterocyclic compound, 40253-47-2, name is Ethyl 5-methyl-1H-1,2,4-triazole-3-carboxylate, molecular formula is C6H9N3O2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
To a solution of ethyl 5-methyl-lH-l,2,4-triazole-3-carboxylate (1.0 g, 6.44 mmol) and l-bromo-3-(bromomethyl)benzene (1.77 g, 7.08 mmol) in THF (32 mL), K2CO3 (1.78 g, 12.88 mmol) was added. The mixture was stirred at 50°C for 18 h then filtered. The filtrate was concentrated under reduced pressure and the crude product was purified on a Biotage pre-packed silica gel column with a gradient of 12percent to 100percent EtOAc:Hexanes to afford ethyl l-(3-bromobenzyl)-5-methyl-lH- l,2,4-triazole-3-carboxylate (1.25 g, 60percent) as a viscous oil. MS(ES+) Ci3H14BrN302 requires: 323, 325 found: 324, 326 [M+H]+(l :l).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route Ethyl 5-methyl-1H-1,2,4-triazole-3-carboxylate, its application will become more common.
Reference:
Patent; JONES, Philip; DIFRANCESCO, Maria, Emilia; PETROCCHI, Alessia; CARROLL, Christopher, L.; MARSZALEK, Joe; CZAKO, Barbara; JOHNSON, Ryan; THEROFF, Jay; WO2014/31936; (2014); A2;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics