Efficient Synthesis of Aryl Boronates via Zinc-Catalyzed Cross-Coupling of Alkoxy Diboron Reagents with Aryl Halides at Room Temperature
作者:Shubhankar Kumar Bose、Todd B. Marder
DOI:10.1021/ol502120q
日期:2014.9.5
A zinc(II)/NHC system catalyzes the borylation of aryl halides with diboron (4) reagents in the presence of KOMe at rt. This transformation can be applied to a broad range of substrates with high functional group compatibility. Radical scavenger experiments do not support a radical-mediated process.
[EN] NEW BICYCLIC DERIVATIVES, A PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM<br/>[FR] NOUVEAUX DÉRIVÉS BICYCLIQUES, LEUR PROCÉDÉ DE PRÉPARATION, ET COMPOSITIONS PHARMACEUTIQUES LES CONTENANT
申请人:SERVIER LAB
公开号:WO2016207217A1
公开(公告)日:2016-12-29
Compounds of formula (I); wherein R1, R2, R3, R4, R5, R6, R7, R8, R14, W, A and n are as defined in the description. Medicaments.
Silver(i)-catalyzed carboxylation of arylboronic esters with CO2
作者:Xiao Zhang、Wen-Zhen Zhang、Ling-Long Shi、Chun-Xiao Guo、Ling-Ling Zhang、Xiao-Bing Lu
DOI:10.1039/c2cc32045b
日期:——
A variety of arylboronic esters were efficiently carboxylated with CO2 using a simple AgOAc/PPh3 catalyst, affording the corresponding carboxylic acids in good yield. This simple and efficient silver(I) catalytic system showed wide functional group compatibility.
Reported is a novel palladium(II)‐initiated Catellani‐type reaction that utilizes widely accessible aryl boronic acids as the substrates instead of aryl halides, thereby greatly expanding the existing scope of this powerful transformation. This borono‐Catellani reaction was promoted by cooperative catalysis between Pd(OAc)2 and the inexpensive 5‐norbornene‐2‐carbonitrile. Practicality is the striking
Ruthenium-Catalyzed Carbon−Carbon Bond Formation via the Cleavage of an Unreactive Aryl Carbon−Nitrogen Bond in Aniline Derivatives with Organoboronates
作者:Satoshi Ueno、Naoto Chatani、Fumitoshi Kakiuchi
DOI:10.1021/ja0713431
日期:2007.5.1
refluxing toluene gave the corresponding phenylation product in 83% yield via aryl carbon−nitrogen bondcleavage. This reaction involves two notable features: (1) the coupling proceeds via the oxidative addition of an aryl carbon−nitrogen bond in anilines to the ruthenium complex, and (2) C−C bondformation takes place via transmetalation between the Ru−NR2 species and organoboronates.