Mechanosynthesis of Enaminones and Mechanochemical Telescopic Synthesis of β,γ‐Unsaturated Butyrolactams
Sign Up to like & getrecommendations! Published in 2024 at "Asian Journal of Organic Chemistry"
DOI: 10.1002/ajoc.202400434
Abstract: The stereoselective mechanochemical synthesis of Z‐enaminones and bis‐enaminones was achieved without any solid component in most cases, reacting 1,3‐dicarbonyl compounds with aliphatic/aromatic primary/secondary amines, which demonstrates the viability of reacting exclusively liquid reagents. The scale‐up… read more here.
Keywords: telescopic synthesis; synthesis unsaturated; mechanochemical telescopic; synthesis ... See more keywords
Facile and expedient synthesis of α,β-unsaturated isoxazol-5(4H)-ones under mild conditions
Sign Up to like & getrecommendations! Published in 2019 at "Research on Chemical Intermediates"
DOI: 10.1007/s11164-019-03999-7
Abstract: Abstract It was found that nano-SiO 2 –H 2 SO 4 was catalyzed by the three-component cyclocondensation of aryl/heteroaryl aldehydes, hydroxylamine hydrochloride, and β -ketoesters toward the synthesis of α , β -unsaturated isoxazol-5(4 H )-ones… read more here.
Keywords: facile expedient; mild conditions; unsaturated isoxazol; synthesis unsaturated ... See more keywords
Oxygen Vacancy-Dependent Photocatalytic Selective Synthesis of an Unsaturated Amide on Spinel CuFe2O4.
Sign Up to like & getrecommendations! Published in 2023 at "Inorganic chemistry"
DOI: 10.1021/acs.inorgchem.2c02371
Abstract: Oxygen vacancies can change the physical and chemical properties of oxide semiconductors, which is applied to the field of ph otocatalysis, including water splitting, carbon dioxide reduction, and organic synthesis. However, the mechanism of oxygen… read more here.
Keywords: unsaturated amide; synthesis unsaturated; synthesis; spinel cufe2o4 ... See more keywords
Synthesis of Unsaturated Silyl Heterocycles via an Intramolecular Silyl-Heck Reaction.
Sign Up to like & getrecommendations! Published in 2019 at "Organometallics"
DOI: 10.1021/acs.organomet.9b00498
Abstract: We report the synthesis of unsaturated silacycles via an intramolecular silyl-Heck reaction. Using palladium catalysis, silicon electrophiles tethered to alkenes cyclize to form 5- and 6-membered silicon heterocycles. The effects of alkene substitution and tether… read more here.
Keywords: silyl heck; silyl; via intramolecular; synthesis unsaturated ... See more keywords
Olefination with Sulfonyl Halides and Esters: Synthesis of Unsaturated Sulfonyl Fluorides
Sign Up to like & getrecommendations! Published in 2022 at "Organic Letters"
DOI: 10.1021/acs.orglett.2c01604
Abstract: Methanedisulfonyl fluoride, CH2(SO2F)2, transforms aromatic aldehydes into β-arylethenesulfonyl fluorides, useful substrates for the SuFEx “click”-type transformations. The reaction mimics mechanism of the Horner–Wadsworth–Emmons olefination, which runs via addition of the carbanion, followed by cyclization–fragmentation of… read more here.
Keywords: synthesis unsaturated; olefination sulfonyl; unsaturated sulfonyl; halides esters ... See more keywords
Efficient and stereodivergent synthesis of unsaturated acyclic fragments bearing contiguous stereogenic elements
Sign Up to like & getrecommendations! Published in 2018 at "Nature chemistry"
DOI: 10.1038/s41557-018-0123-7
Abstract: Synthetic organic strategies that enable the catalytic and rapid assembly of a large array of organic compounds that possess multiple stereocentres in acyclic systems are somewhat rare, especially when it comes to reaching today’s high… read more here.
Keywords: stereogenic elements; synthesis unsaturated; efficient stereodivergent; stereodivergent synthesis ... See more keywords
Phase-transfer catalyzed asymmetric synthesis of α,β-unsaturated γ,γ-disubstituted γ-lactams.
Sign Up to like & getrecommendations! Published in 2017 at "Chemical communications"
DOI: 10.1039/c7cc01058c
Abstract: The direct enantioselective vinylogous Michael addition of unsaturated γ-monosubstituted γ-lactams was realized by using chiral phase-transfer catalysis as a means to give enantioenriched γ,γ-disubstituted γ-lactams. read more here.
Keywords: catalyzed asymmetric; transfer catalyzed; phase transfer; synthesis unsaturated ... See more keywords
Enzymatic synthesis of unsaturated polyesters: functionalization and reversibility of the aza-Michael addition of pendants
Sign Up to like & getrecommendations! Published in 2019 at "Polymer Chemistry"
DOI: 10.1039/c8py01655k
Abstract: Enzymatic synthesis of unsaturated polyesters and the temperature-dependent reversibility of the aza-Michael addition of diethyl amine pendants. read more here.
Keywords: synthesis unsaturated; enzymatic synthesis; aza michael; unsaturated polyesters ... See more keywords
Green and efficient iron-catalyzed cross-dehydrogenative coupling for the synthesis of α,β-unsaturated ketones via C(sp3)–H functionalization
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DOI: 10.1039/d5ra01979f
Abstract: An efficient C–C cross-coupling approach for the synthesis of α,β-unsaturated ketones was developed through C(sp3)–H functionalization of acetophenone and methylarene under thermal conditions in the presence of a green catalyst, FeCl3·6H2O, with DMF as a… read more here.
Keywords: sp3 functionalization; cross; unsaturated ketones; synthesis unsaturated ... See more keywords
Dual-engine-driven synthesis of unsaturated esters over channel-expanding Cu–Cs catalysts
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DOI: 10.1039/d5sc02896e
Abstract: This study presents a one-step catalytic synthesis of unsaturated esters (methyl acrylate, MA; methyl methacrylate, MMA) from methanol (MeOH, C1 source) and methyl acetate (MAc) via a Cu–Cs dual-engine-driven (DED) system that integrates four sequential… read more here.
Keywords: synthesis unsaturated; dual engine; engine driven; synthesis ... See more keywords
Direct Synthesis of β,γ-Unsaturated α-Keto Esters from Aldehydes and Pyruvates
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DOI: 10.1055/s-0037-1612255
Abstract: Herein, we describe two practical methods to synthesize β,γ-unsaturated α-keto esters directly from aldehydes and pyruvates promoted by BF3•Et2O in the presence of Ac2O or by Ti(OEt)4 under mild conditions. A variety of aromatic aldehydes… read more here.
Keywords: synthesis unsaturated; aldehydes pyruvates; unsaturated keto; keto esters ... See more keywords