A cyclization–carbonylation–cyclization coupling reaction of (ortho-alkynyl phenyl) (methoxymethyl) sulfides with the palladium(<scp>ii</scp>)-bisoxazoline catalyst
A cyclization–carbonylation–cyclizationcouplingreaction (CCC-coupling reaction) of (o-alkynylphenyl) (methoxymethyl) sulfides, catalyzed by (box)PdII complexes, afforded symmetrical ketones bearing two benzo[b]thiophene groups in good to excellent yields. This method is applicable to a broad range of substrates.
(盒)Pd II配合物催化(邻-炔基苯基)(甲氧基甲基)硫化物的环化-羰基化-环化偶联反应(CCC偶联反应),得到带有两个苯并[ b ]噻吩基团的对称酮,收率好至极佳。该方法适用于广泛的基材。
Ytterbium Triflate Catalyzed Friedel–Crafts Reaction: Facile Synthesis of Diaryl Ketones
作者:Weike Su、Can Jin
DOI:10.1081/scc-200039332
日期:2004.12.31
Abstract Friedel–Crafts reaction of aromatic compounds (benzenes, thiophene, furan, pyrrole, naphthalene, and benzothiophene) with bis(trichloromethyl) carbonate [BTC] was efficiently catalyzed by ytterbium triflate [Yb(OTf)3] to give diaryl ketones with moderate to good yields.
A palladium-catalyzed C–H functionalization route to ketones <i>via</i> the oxidative coupling of arenes with carbon monoxide
作者:Taleah M. Levesque、R. Garrison Kinney、Bruce A. Arndtsen
DOI:10.1039/d0sc00085j
日期:——
development of a new palladium-catalyzedmethod to generate ketones via the oxidativecoupling of two arenes and CO. This transformation is catalyzed by simple palladium salts, and is postulated to proceed via the conversion of arenes into high energy aroyl triflate electrophiles. Exploiting the latter can also allow the synthesis of unsymmetrical ketones from two different arenes.