Facile Syntheses of Symmetrical Diaryliodonium Salts from Various Arenes, with Sodium Metaperiodate as the Coupling Reagent in Acidic Media¹
作者:Lech Skulski、Lukasz Kraszkiewicz
DOI:10.1055/s-2008-1067169
日期:2008.8
An easy, inexpensive, safe, and effective preparative procedure to obtain symmetrical diaryliodonium bromides (in 17-88% crude yields) from various arenes is presented in this paper. A novel method for the in situ preparation of iodosyl sulfate (Chretien's reagent) is given. Eleven exemplary crude diaryliodonium bromides were readily oxidatively metathesized with 40% aqueous tetrafluoroboric acid and
Rapid Microwave‐Promoted Base‐Free Suzuki Coupling Reaction of Sodium Tetraphenylborate with Hypervalent Iodonium Compounds in Water
作者:Jie Yan、Zhongshi Zhou、Min Zhu
DOI:10.1080/00397910600588454
日期:2006.6.1
Abstract The palladium chloride–catalyzed Suzuki couplingreaction of sodium tetraphenylborate with hypervalent iodonium salts and iodanes was achieved under microwave irradiation in water without base. A convenient and rapid method for formation of carbon–carbon bonds had excellent yields.
Diaryliodonium salts react with carbon monoxide, in the presence of zinc and a catalytic amount of palladium acetate, to give a mixture of the corresponding diarylketones and diaryl-α-diketones under mild conditions.
alkylindium reagents with diaryliodonium salts proceeded efficiently in the presence of tetrakis(triphenylphosphine)palladium [Pd(PPh3)4], 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl (SPhos), lithium tert-butoxide, and lithium chloride in DMA/THF (1:1) at 100 °C, leading to the corresponding cross-coupling products in moderate to good yield with broad substrate scope and wide functional group tolerance