Synthesis of Polysubstituted Pyridines and Pyrazines via Truce–Smiles Rearrangement of Amino Acid-Based 4-Nitrobenzenesulfonamides
作者:Michaela Tkadlecová、Barbora Lemrová、Miroslav Soural
DOI:10.1021/acs.joc.2c03025
日期:2023.3.3
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。