The research provides a novel approach for producing diarylmethane derivatives using CB[7]–NaCl–PdCl2 catalyzed Suzuki cross-coupling reaction of benzyl chloride derivatives and arylboronic acids in ethanol aqueous solution.
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.
Threefold and chemoselective couplings of triarylbismuths with benzylic chlorides and iodides using palladium catalysis
作者:Maddali L. N. Rao、Ritesh J. Dhanorkar
DOI:10.1039/c3ra46672h
日期:——
This paper describes the palladium-catalyzed studies on threefold coupling of triarylbismuth reagents with benzylic chlorides and iodides. The optimized protocol conditions are operationally simple, delivering threefold coupling of a variety of triarylbismuths in combination with benzylic chlorides and iodides. The two optimized protocols allowed the synthesis of a diverse range of unsymmetrical diarylmethanes in an efficient manner. As part of this study, chemoselective transformation of benzylic chlorides and iodides was also achieved.
A palladiumcatalyzed Suzuki cross-coupling for construction of Csp3–Csp2 bond via Csp3–N bond activation of benzyltrimethyl-ammonium salt is described. This reaction not only offered a highly efficientapproach to diarylmethanes but also paved the way for the application of benzyltrimethylammonium salts in the palladiumcatalyzedcrosscouplingreactions.
Dehydroxylative Arylation of Alcohols via Paired Electrolysis
作者:Zhihui Wang、Xiaoqian Zhao、Hongyu Wang、Xiuyun Li、Zhimin Xu、Velayudham Ramadoss、Lifang Tian、Yahui Wang
DOI:10.1021/acs.orglett.2c03136
日期:2022.10.14
Nonactivated alcohols along with arene compounds are used in electrochemical dehydroxylative arylation for constructing C(sp3)–C(sp2) bonds. The PIII reagent undergoes single-electron anodic oxidation to form its radical cation, which reacts with the alcohol to produce an alkoxytriphenylphosphine radical. Through spontaneous β-scission of the phosphoranyl radical, the C–O bond is cleaved to form an