The oxidative coupling between benzaldehyde derivatives and phenylacetylene catalyzed by rhodium complexes via C-H bond activation
نویسندگان
چکیده
منابع مشابه
Rhodium-catalyzed olefination of aryl tetrazoles via direct C-H bond activation.
Rh(III)-catalyzed direct olefination reaction via aromatic C-H bond activation is described using tetrazole as the directing group. This reaction provides a straightforward way for the synthesis of ortho-alkenyl aryl tetrazoles. Various functional groups tolerate the reaction conditions and afford the corresponding products in moderate to excellent yields.
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The use of α,ω-dienes as functionalization reagents for olefinic carbon-hydrogen bonds has been rarely studied. Reported herein is the rhodium(I)-catalyzed rearrangement of prochiral 1,6-heptadienes into [2,2,1]-cycloheptane derivatives with concomitant creation of at least three stereogenic centers and complete diastereocontrol. Deuterium-labeling studies and the isolation of a key intermediat...
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Rhenium complex, [ReBr(CO)3(thf)]2-catalyzed reactions between aromatic imines and either acetylenes or α,β-unsaturated carbonyl compounds gave indene derivatives in good to excellent yields. These reactions proceed via C–H bond activation, insertion of acetylenes or α,β-unsaturated carbonyl compounds, intramolecular nucleophilic cyclization, and reductive elimination. Indene derivatives were a...
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Fluoroalkenes represent a class of privileged structural motifs, which found widespread use in medicinal chemistry. However, the synthetic access to fluoroalkenes was much underdeveloped with previous reported methods suffering from either low step economy or harsh reaction conditions. Here we present a Rh(III)-catalysed tandem C-H/C-F activation for the synthesis of (hetero)arylated monofluoro...
متن کاملRhodium mediated C-H bond functionalisation leading to carboxylate derivatives.
Carboxylic acids and their esters or lactones are among the most common functionalities, and a large number of fine chemicals are accessible from this functionality. Typical organic synthetic procedures towards carboxylic acids include oxidation of alcohols and aldehydes and hydrolysis of nitriles, while carboxylation of organic substrates containing C X bonds is perhaps the best established ap...
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ژورنال
عنوان ژورنال: Heterocyclic Communications
سال: 2020
ISSN: 2191-0197,0793-0283
DOI: 10.1515/hc-2020-0004