Palladium-catalyzed regioselective cascade reaction of carbon dioxide, amines and allenes for the synthesis of functionalized carbamates
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DOI: 10.1007/s11426-019-9679-6
Abstract: A palladium-catalyzed regioselective three-component cascade reaction of carbon dioxide, amines and allenes has been developed, providing an expedient and practical method for the construction of a range of functionalized carbamates containing dihydrobenzofuran or indole moiety… read more here.
Keywords: dioxide amines; reaction carbon; cascade reaction; carbon dioxide ... See more keywords
Exploration of Cu-catalyzed regioselective hydrodehalogenation of o-haloanilides using EtOH as hydrogen source
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2021.121844
Abstract: Abstract In present work, we have explored a Cu(acac)2/vasicine-catalyzed regioselective hydrodehalogenation methodology of o-haloanilides using EtOH as hydrogen source and solvent. The catalytic system could selectively dehalogenate 2-Br and 2-I, and features regioselective, efficient and… read more here.
Keywords: catalyzed regioselective; regioselective hydrodehalogenation; etoh hydrogen; using etoh ... See more keywords
FeBr3-catalyzed regioselective hydroxysulfenylation of N-allylsulfonamides with sulfonyl hydrazides
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DOI: 10.1016/j.tet.2018.12.044
Abstract: Abstract Regioselective hydroxysulfenylation of unactivated C C double bonds was reported. Using FeBr3-bpy as the catalyst, Na2S2O8 as the oxidant, and sulfonyl hydrazides as the sulfenyl sources, hydroxysulfenylation of unfunctionalized olefins proceeded readily, giving a… read more here.
Keywords: hydroxysulfenylation; regioselective hydroxysulfenylation; catalyzed regioselective; febr3 catalyzed ... See more keywords
Recent explorations of palladium-catalyzed regioselective aromatic extension processes
Sign Up to like & getrecommendations! Published in 2020 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2020.152670
Abstract: Abstract Polycyclic aromatic systems are important in synthetic chemistry, material science, and pharmaceutical industry. Therefore, extensive efforts have been made by the aromatic extension for the efficient access to diverse polycyclic aromatic systems. This review… read more here.
Keywords: recent explorations; aromatic systems; palladium catalyzed; aromatic extension ... See more keywords
Electrooxidative Iridium-Catalyzed Regioselective Annulation of Benzoic Acids with Internal Alkynes.
Sign Up to like & getrecommendations! Published in 2021 at "Organic letters"
DOI: 10.1021/acs.orglett.0c04168
Abstract: Electrochemically driven, Cp*Ir(III)-catalyzed regioselective annulative couplings of benzoic acids with alkynes have been established herein. The combination of iridium catalyst and electricity not only circumvents the need for stoichiometric amount of chemical oxidant, but also… read more here.
Keywords: regioselective annulation; iridium catalyzed; catalyzed regioselective; benzoic acids ... See more keywords
Hydrogen-Bonding Controlled Nickel-Catalyzed Regioselective Cyclotrimerization of Terminal Alkynes.
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DOI: 10.1021/acs.orglett.1c01095
Abstract: Herein we report a hydrogen-bonding controlled nickel-catalyzed regioselective cyclotrimerization of terminal alkynes in moderate to excellent yields with high regioselectivities toward 1,3,5-trisubstituted benzenes. This method features a cheap catalyst, mild reaction conditions, and excellent functional… read more here.
Keywords: controlled nickel; bonding controlled; terminal alkynes; hydrogen bonding ... See more keywords
Rh(III)-Catalyzed Regioselective Annulations of 3-Arylisoxazolones and 3-Aryl-1,4,2-dioxazol-5-ones with Propargyl Alcohols: Access to 4-Arylisoquinolines and 4-Arylisoquinolones.
Sign Up to like & getrecommendations! Published in 2021 at "Organic letters"
DOI: 10.1021/acs.orglett.1c02049
Abstract: The Rh(III)-catalyzed dual directing group assisted C-H activation/annulation of 3-arylisoxazolones with propargyl alcohols has been developed, which expands the application scope of isoxazolones in organic synthesis. This protocol also worked well with 3-aryl-1,4,2-dioxazol-5-ones to produce… read more here.
Keywords: propargyl alcohols; dioxazol ones; iii catalyzed; regioselective annulations ... See more keywords
Copper-Catalyzed Regioselective 1,4-Selenosulfonylation of 1,3-Enynes to Access Cyanoalkylsulfonylated Allenes.
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DOI: 10.1021/acs.orglett.1c02665
Abstract: By employing CuOAc as the catalyst, we realize a four-component reaction of 1,3-enynes, diselenides, DABCO·(SO2)2, and cycloketone oxime esters, providing facile access to diverse cyanoalkylsulfonylated allenyl selenides in moderate to good yields. This reaction features… read more here.
Keywords: enynes access; selenosulfonylation enynes; regioselective selenosulfonylation; catalyzed regioselective ... See more keywords
Pd-Catalyzed Regioselective Branched Hydrocarboxylation of Terminal Olefins with Formic Acid.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.1c04231
Abstract: A regioselective Pd-catalyzed hydrocarboxylation of terminal olefins with HCOOH is described. A wide variety of branched carboxylic acids can readily be obtained with high regioselectivities under mild reaction conditions. The reaction is operationally simple and… read more here.
Keywords: hydrocarboxylation terminal; regioselective branched; catalyzed regioselective; terminal olefins ... See more keywords
Palladium-Catalyzed Regioselective Arylalkenylation of Ynamides.
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DOI: 10.1021/acs.orglett.2c00197
Abstract: A cationic palladium-catalyzed arylalkenylation of ynamides is presented. The putative keteniminium arylpalladium intermediate likely dictates the regioselective carbopalladation of the ynamide to form a vinylpalladium species. The capture of this complex by the olefin yields… read more here.
Keywords: catalyzed regioselective; palladium catalyzed; regioselective arylalkenylation; arylalkenylation ynamides ... See more keywords
Gold(I)-Catalyzed Regioselective Cyclization to Access Cyclopropane-Fused Tetrahydrobenzochromenes.
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DOI: 10.1021/acs.orglett.2c02564
Abstract: Gold(I)-catalyzed efficient synthetic transformation was achieved to access the tetrahydrobenzo[h]cyclopropa[c]chromenes from allyl-substituted 1,6-diynes. Cyclopropane-fused tetrahydrobenzochromenes were obtained regioselectively in ≤92% yields. In this atom-economic organic transformation, three new C-C bonds were formed sequentially in one… read more here.
Keywords: fused tetrahydrobenzochromenes; cyclopropane fused; catalyzed regioselective; gold catalyzed ... See more keywords