good to excellent yields (up to 99%). The acyclic sulfonamido-substituted allylic carbonates as aza-π-allylpalladium 1,4-dipole precursors also apply to the developed synthesized strategy, achieving the synthesis of hexahydropyrimidines. Moreover, the in situ-generated aza-π-allylpalladium 1,4-dipoles undergoing dimeric [4 + 4] cycloaddition were also demonstrated by the construction of 1,5-diazocane
钯催化 5-亚甲基-1,3-恶嗪-2-酮和 5-亚甲基-1,3-
二恶烷-2-酮脱羧生成氮杂-π-烯丙基
钯和氧杂-π-烯丙基
钯 1,4-偶极子开发了与
1,3,5-三嗪烷进行 [4 + 2] 环加成反应,以良好到优异的收率(高达 99%)提供多种六氢
嘧啶和 1,3-恶嗪烷衍
生物。无环磺酰胺基取代的烯
丙基碳酸酯作为氮杂-π-烯丙基
钯1,4-偶极子前体也适用于所开发的合成策略,实现了六氢
嘧啶的合成。此外,还通过构建1,5-重氮烷衍
生物证明了原位生成的氮杂-π-烯丙基
钯1,4-偶极子进行二聚[4 + 4]环加成。