作者:Kohei Yamada、Mika Kota、Kensuke Takahashi、Hikaru Fujita、Masanori Kitamura、Munetaka Kunishima
DOI:10.1021/acs.joc.9b01261
日期:2019.12.6
condensing reagents have been developed. The palladium-catalyzed O-N allylic rearrangement of 2-(allyloxy)-4,6-dichloro-1,3,5-triazine and subsequent regioselective substitution using alcohols and an amine afforded chlorotriazinones, which can be readily converted using N-methylmorpholine into the corresponding condensing reagents. The condensation of carboxylic acids and amines using these reagents proceeded
已经开发了基于三嗪酮的新型缩合剂。钯催化2-(烯丙氧基)-4,6-二氯-1,3,5-三嗪的烯丙基重排,随后使用醇和胺进行区域选择性取代,制得的氯三嗪酮,可以使用N-甲基吗啉轻松转化为氯代三嗪酮。相应的缩合试剂。使用这些试剂进行的羧酸和胺的缩合以良好的收率得到所需的酰胺。与4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基吗啉鎓氯化物相比,新合成的基于三嗪酮的缩合试剂表现出更高的反应性。