Synthesis of 9-Alkylidene-9<i>H</i>-fluorenes by a Novel Palladium-Catalyzed Rearrangement
作者:Qingping Tian、Richard C. Larock
DOI:10.1021/ol000220h
日期:2000.10.1
iodides react with 1-aryl-1-alkynes to afford 9-alkylidene-9H-fluorenes in good yields. This process appears to involve (1) oxidative addition of the aryl iodide to Pd(0), (2) alkyne insertion, (3) rearrangement of the resulting vinylic palladium intermediate to an arylpalladium species, and (4) aryl-aryl coupling with simultaneous regeneration of the Pd(0) catalyst.
Synthesis of 9-Alkylidene-9<i>H</i>-fluorenes by a Novel, Palladium-Catalyzed Cascade Reaction of Aryl Halides and 1-Aryl-1-alkynes
作者:Richard C. Larock、Qingping Tian
DOI:10.1021/jo010561o
日期:2001.11.1
In the presence of a palladium catalyst and NaOAc, aryl iodides react with 1-aryl-1-alkynes to afford 9-alkylidene-9H-fluorenes in good yields. The products from this reaction are highly dependent on the base employed. This process appears to involve (1) oxidative addition of the aryl iodide to Pd(0), (2) alkyne insertion, (3) rearrangement of the resulting vinylic palladium intermediate to an arylpalladium