Highly Selective Synthesis of 6-Glyoxylamidoquinoline Derivatives via Palladium-Catalyzed Aminocarbonylation
作者:Sami Chniti、László Kollár、Attila Bényei、Attila Takács
DOI:10.3390/molecules27010004
日期:——
XantPhos, the quinoline-6-carboxamide derivatives were synthesized almost exclusively under atmospheric conditions (up to 98%). The isolation and characterization of the new carbonylated products of various structures were also accomplished. Furthermore, the structure of three new mono- and double-carbonylated compounds were unambiguously established by using a single-crystal XRD study.
已经在大量胺亲核试剂存在下研究了 6-碘喹啉的氨基羰基化,为生产各种喹啉-6-甲酰胺和喹啉-6-乙醛酰胺衍生物提供了有效的合成途径。经过详细的优化研究表明,酰胺和酮酰胺的形成受到反应条件的强烈影响。在 Pd(OAc) 2 /2 PPh 3存在下在 40 bar 的一氧化碳压力下进行反应,相应的 2-酮甲酰胺作为主要产物形成(高达 63%)。当单齿三苯基膦被双齿 XantPhos 取代时,喹啉-6-甲酰胺衍生物几乎完全在大气条件下合成(高达 98%)。还完成了各种结构的新羰基化产物的分离和表征。此外,通过使用单晶 XRD 研究,明确地确定了三种新的单羰基化和双羰基化化合物的结构。