Palladium-Catalyzed Hydride Addition/C–H Bond Activation Cascade: Cycloisomerization of 1,6-Diynes
作者:José F. Rodríguez、Katherine I. Burton、Ivan Franzoni、David A. Petrone、Ina Scheipers、Mark Lautens
DOI:10.1021/acs.orglett.8b03057
日期:2018.11.2
The use of ammonium halide salts as metal hydride precursors in a new Pd-catalyzed cycloisomerization of 1,6-diynes, which affords unexplored silylated 2-azafluorenes, is reported. This cascade process includes the addition of a Pd–hydride species to a π-system, intramolecular carbopalladation, and C(sp2)–H bond activation. A variety of functional groups are tolerated, and the synthetic utility of
据报道,在新的钯催化的1,6-二炔的环异构化反应中,卤化铵盐作为金属氢化物前体的用途得到了未开发的甲硅烷基化的2-氮杂芴。这种级联过程包括将π氢化物加到π系统中,分子内碳pal化和C(sp 2)–H键活化。可以容忍各种官能团,并且通过一系列衍生化方法证明了所得产物的合成效用。