Deoxygenative cross-electrophile coupling of benzyl chloroformates with aryl iodides
作者:Yingying Pan、Yuxin Gong、Yanhong Song、Weiqi Tong、Hegui Gong
DOI:10.1039/c9ob00628a
日期:——
This work describes Ni-catalyzed cross-electrophile coupling of benzyl chloroformate derivatives with aryl iodides that generates a wide range of diaryl methane products. The mild reaction conditions merit the C–O bond radical fragmentation of benzyl chloroformates via halide abstraction or a single electron reduction by a Ni catalyst. This work offers a new substrate type for cross-electrophile couplings
这项工作描述了镍催化的氯甲酸苄酯衍生物与芳基碘化物的交叉亲电子偶联,生成多种二芳基甲烷产物。温和的反应条件使得氯甲酸苄酯的 C-O 键自由基通过卤化物夺取或 Ni 催化剂的单电子还原而断裂。这项工作为交叉亲电子偶联提供了一种新的底物类型。
Suzuki Cross-Coupling Reactionof Benzylic Halides with Arylboronic Acids in the Presence of aTetraphosphine/Palladium Catalyst
作者:Henri Doucet、Maurice Santelli、Ludovic Chahen
DOI:10.1055/s-2003-40994
日期:——
The cis,cis,cis-1,2,3,4-tetrakis(diphenylphosphinomethyl)cyclopentane-[PdCl(C3H5)]2 systemcatalyses efficiently the Suzuki cross-coupling reaction of benzylichalides with arylboronic acids. A wide variety of benzylic bromidesor chlorides and functionalised arylboronic acids lead selectivelyto the corresponding diarylmethane adducts in good yields. Furthermore,this catalyst can be used at low loading in many cases.
Efficient synthesis of diarylmethane derivatives by PdCl 2 catalyzed cross-coupling reactions of benzyl chlorides with aryl boronic acids in aqueous medium
The research provides a simple and efficient method for preparing diarylmethane derivatives using the cross-coupling reaction of benzyl chlorides and aryl boronic acids catalyzed by palladium chloride in DMF aqueous solution without additional ligand.
Polyfunctional benzylic zinc chlorides by the direct insertion of magnesium into benzylic chlorides in the presence of LiCl and ZnCl2
作者:Albrecht Metzger、Fabian M. Piller、Paul Knochel
DOI:10.1039/b812396a
日期:——
Benzylic zinc chlorides bearing various functional groups are smoothly prepared by the directinsertion of magnesium into benzylic chlorides in the presence of LiCl and ZnCl(2).
Preparation of Functionalized Organoindium Reagents by Means of Magnesium Insertion into Organic Halides in the Presence of InCl<sub>3</sub>at Room Temperature
procedure for the direct preparation of triorganoindium reagents from organichalides by means of magnesium insertion in the presence of InCl3 and LiCl is reported (see scheme). The organoindium reagents are obtained in good yields from functionalized aryl, heteroaryl, and alkyl bromides and benzyl chlorides at 25 °C in THF within 4 h. Moreover, the resulting organoindium reagents could be efficiently