反应详情

温度

135 °C

A mixture of 3-methylthio-6-(3-methoxybenzyl)-1,2,4-triazin-5-one (1.0 g) and 2-guanidino-4-[(2-aminoethyl)thiomethyl]thiazole (0.924 g) was heated at 135° C. for 3 hours. The residue was dissolved in dimethyl formamide (20 ml) and the solution was allowed to stand at room temperature for 8 days. A yellow brown solid precipitated out of solution, and this was filtered off and dried in air, then purified using pressure assisted short bed column chromatography (Kieselgel 60) with chloroform/methanol/ammonia (s.g. 0.880) 8:2:0.3 v/v/v as eluant, to give 6-(3-methoxybenzyl)-3-[2-(2-guanidinothiazol-4-yl-methylthio)ethylamino]-1,2,4-triazin-5-one (0.1 g). The n.m.r. spectrum of the product in d4 acetic acid using tetramethylsilane as an internal standard (δ=0) had the following resonances (δ): 2.8 (2H, multiplet); 3.5 (2H, multiplet); 3.75 (5H, singlet); 3.9 (2H, singlet); 6.8-6.9 (4H, multiplet); 7.2 (1H, broad doublet).

1. customA yellow brown solid precipitated out of solution
2. filtrationthis was filtered off
3. customdried in air
4. custompurified