Unified Protocol for Fe-Based Catalyzed Biaryl Cross-Couplings between Various Aryl Electrophiles and Aryl Grignard Reagents
作者:Lei Wang、Yi-Ming Wei、Yan Zhao、Xin-Fang Duan
DOI:10.1021/acs.joc.9b00151
日期:2019.5.3
Ti(OEt)4/PhOM enabled a highly general iron-based catalyst system, which could efficiently catalyze the biaryl coupling reaction between various electrophiles (I, Br, Cl, OTs, OCONMe2, OSO2NMe2) and common or functionalized aryl Grignardreagents with high functional group tolerance. Selective couplings of aryl iodides and bromides over the corresponding oxygen-based electrophiles have been achieved, and
N-Heterocyclic Carbene Derived Nickel-Pincer Complexes: Efficient and Applicable Catalysts for Suzuki-Miyaura Coupling Reactions of Aryl/Alkenyl Tosylates and Mesylates
作者:Jun-ichi Kuroda、Kiyofumi Inamoto、Kou Hiroya、Takayuki Doi
DOI:10.1002/ejoc.200900067
日期:2009.5
activities of NHC-derived nickel–pincercomplexes for the Suzuki–Miyauracouplingreactions of aryl/alkenyltosylates and mesylates are described. In the presence of a catalytic amount of nickelacycle 1a, a wide array of tosylates and mesylates reacted with several aryl- and alkenylboronic acids to afford the coupling products, generally in high yields. Fine tuning of the reaction conditions for each class
An iodine-induced synthesis of sulfonate esters via cross-coupling reactions of sodiumsulfinates with phenols is reported. This synthetic route is low-cost, facile, green and efficient, and could afford the target products with good to excellent yields under mild conditions.
Palladium-Catalyzed Sonogashira Coupling of Aryl Mesylates and Tosylates
作者:Pui Ying Choy、Wing Kin Chow、Chau Ming So、Chak Po Lau、Fuk Yee Kwong
DOI:10.1002/chem.201001269
日期:2010.9.3
Up to speed: The first general and mild protocol for the Sonogashiracoupling of aryl mesylates is presented (see scheme). The coupling intermediate also provides facile access to 2‐substituted isoquinolines.
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.