Synthesis of Bicyclic Enediynes from Bis[phenyl[(trifluoromethanesulfonyl)oxy]iodo]acetylene: A Tandem Diels−Alder/Palladium(II)- and Copper(I)-Cocatalyzed Cross-Coupling Approach
作者:John H. Ryan、Peter J. Stang
DOI:10.1021/jo960750k
日期:1996.1.1
The reaction of bicycloalkenylbis(phenyliodonium) triflates 1a or b (available via the Diels-Alder reaction of bis[phenyl[(trifluoromethanesulfonyl)oxy]iodo]acetylene with cyclopentadiene or furan, respectively) with alkynylstannanes 2a-g at room temperature in DMF in the presence of catalytic amounts of trans-benzyl(chloro)bis(triphenylphosphine)palladium(II) and copper(I) iodide proceeds smoothly
Synthesis of Enediynes by Reaction of Bicycloalkenyldiiodonium Salts with Lithium Alkynylcuprates
作者:Peter J. Stang、Thorsten Blume、Viktor V. Zhdankin
DOI:10.1055/s-1993-25783
日期:——
Bicycloalkenyldiiodonium salts, di[phenyl(trifluoromethanesulfonyloxy) iodo]norbornadiene (1a) and di[phenyl(trifluoromethanesulfonyloxy) iodo]-3,5-epoxy-1,4-cyclohexadiene (1b) react under mild conditions, with a number of lithium alkynylcuprates, generated in situ from the corresponding lithium acetylides and copper(I) cyanide, to give the respective enediynes 2 in moderate to good isolated yields.