Solid-Phase Synthesis of Trisubstituted Benzo[<i>f</i>][1,2,3]triazolo[1,5-<i>a</i>][1,4]diazepin-6(5<i>H</i>)-ones and Their Sulfonyl Analogues under Mild Reaction Conditions
作者:Veronika Fülöpová、Petr Funk、Igor Popa、Claire McMaster、Miroslav Soural
DOI:10.1002/ejoc.201500314
日期:2015.6
The solid-phase synthesis of 4H-benzo[f][1,2,3]triazolo[1,5-a][1,4]diazepin-6(5H)-ones and 4,5-dihydrobenzo[f][1,2,3]triazolo[5,1-d][1,2,5]thiadiazepine 6,6-dioxides under mild and catalyst-free conditions is described. The seven-step synthetic strategy is based on the preparation of polymer-supported 4-nitrobenzenesulfonamides and their alkylation with various propargyl derivatives. Cleavage of the
4H-benzo[f][1,2,3]triazolo[1,5-a][1,4]diazepin-6(5H)-ones和4,5-dihydrobenzo[f][的固相合成描述了 1,2,3] 三唑并 [5,1-d][1,2,5]thiadiazepine 6,6-二氧化物在温和且无催化剂的条件下。七步合成策略基于聚合物负载的 4-硝基苯磺酰胺的制备及其与各种炔丙基衍生物的烷基化。从每个关键中间体上裂解 4-硝基苯磺酰基,然后用不同的 2-叠氮苯甲酸进行酰化,导致自发的分子内 (Huisgen) 1,3-偶极环加成。从聚合物载体上裂解后,以极好的粗纯度和非常好的总产率获得目标化合物。