condensation, and oxidation. When cleavage from the resin occurred before the trimethylsilanolate treatment, C-arylation was followed by enamination, which yielded trisubstituted pyrazines. Through the developed protocols, targeted synthesis of novel heterocyclic derivatives was performed using mild reaction conditions and a number of readily available starting materials.
固定化
L-谷氨酸β-甲酯用4-硝基
苯磺酰氯磺酰化,并用各种α-卤代酮烷基化。所得磺酰胺与三甲基
硅烷醇
钾反应。然后,从聚合物载体上裂解后,通过一步 C-芳基化、羟醛缩合和氧化生成四取代
吡啶。当在三甲基
硅烷醇化物处理之前发生
树脂裂解时,C-芳基化随后进行烯化,产生三取代的
吡嗪。通过开发的方案,使用温和的反应条件和许多容易获得的起始材料进行了新型杂环衍
生物的靶向合成。