Sulfonate Versus Sulfonate: Nickel and Palladium Multimetallic Cross-Electrophile Coupling of Aryl Triflates with Aryl Tosylates
作者:Kai Kang、Liangbin Huang、Daniel J. Weix
DOI:10.1021/jacs.0c04670
日期:2020.6.17
While phenols are frequent and convenient aryl sources in cross-coupling, typically as sulfonate esters, the direct cross-Ullmann coupling of two different sulfonate esters is unknown. We report here a general solution to this chal-lenge catalyzed by a combination of Ni and Pd with Zn reductant and LiBr as an additive. The reaction has broad scope, as demonstrated in 33 examples (65% ± 11% ave yield)
Nickel-Catalyzed Reductive Cross-Coupling of Aryl Triflates and Nonaflates with Alkyl Iodides
作者:Yuto Sumida、Takamitsu Hosoya、Tomoe Sumida
DOI:10.1055/s-0036-1588464
日期:2017.8
coupling of aryl triflates and nonaflates with alkyliodides using manganese(0) as a reductant is described. The method is applicable to the reductive alkylation of various aryl sulfonates, including o-borylaryl triflate, which enabled efficient construction of diverse alkylated arenes under mild conditions. A nickel-catalyzed cross-electrophile coupling of aryl triflates and nonaflates with alkyl iodides
Carbonylative coupling of aryl tosylates/triflates with arylboronic acids under CO atmosphere
作者:Cheng Yi Hao、Dan Wang、Ya Wei Li、Lin Lin Dong、Ying Jin、Xiu Rong Zhang、He Yun Zhu、Sheng Chang
DOI:10.1039/c6ra14678c
日期:——
The carbonylative Suzuki–Miyaura reaction between aryl tosylates/triflates with arylboronic acid is herein reported, using base-free conditions and a balloon pressure of carbon monoxide. Under these conditions, unsymmetrical biaryl ketones were obtained in modest to excellent yields. This method was adapted to the synthesis of oxybenzone and ketoprofen in good yields under mild conditions.