Enzyme-Catalyzed Cascade Michael/Cyclization Reaction for the Synthesis of 3,4-Dihydropyran Derivatives by Using a Protease
Sign Up to like & getrecommendations! Published in 2017 at "Catalysis Letters"
DOI: 10.1007/s10562-017-2275-2
Abstract: AbstractProtease from Streptomyces griseus (SGP) as a sustainable biocatalyst was successfully applied in the Michael/cyclization reaction between dimedone and aryl or alkyl substituted α,β-unsaturated ketones or ester for the synthesis of 3,4-dihydropyran derivatives. The products… read more here.
Keywords: dihydropyran derivatives; synthesis dihydropyran; cyclization reaction;
Metal-free visible-light-induced oxidative cyclization reaction of 1,6-enynes and arylsulfinic acids leading to sulfonylated benzofurans
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Chemical Letters"
DOI: 10.1016/j.cclet.2019.05.041
Abstract: Abstract A new and convenient visible-light-induced method has been developed for the synthesis of sulfonylated benzofurans via oxidative cyclization reaction of 1,6-enynes and arylsulfinic acids. This reaction was carried out under metal-free and mild conditions,… read more here.
Keywords: sulfonylated benzofurans; oxidative cyclization; cyclization reaction; light induced ... See more keywords
Corrigendum to “α-Amination and 5-exo-trig cyclization reaction of sulfur-containing Schiff bases with N-phenyltriazolinedione and their anti-lipid peroxidation activity” [C. R. Chimie, 20 (2017) 424–434, doi:10.1016/j.crci.2016.05.024]
Sign Up to like & getrecommendations! Published in 2017 at "Comptes Rendus Chimie"
DOI: 10.1016/j.crci.2017.04.004
Abstract: Comptes Rendus Chimie - In Press.Proof corrected by the author Available online since samedi 27 mai 2017 read more here.
Keywords: exo trig; trig cyclization; amination exo; cyclization reaction ... See more keywords
Novel synthesis of tetrahydro-1H-pyrrolo[1,2-a]imidazol-2-ones via decarboxylative cyclization reaction of α-amino acids and α-ketoamides
Sign Up to like & getrecommendations! Published in 2017 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2016.12.079
Abstract: An efficient and practical method was developed for the synthesis of tetrahydro-1H-pyrrolo[1,2-a]imidazol-2-ones based on the decarboxylative cyclization reaction of α-ketoamides and proline. In most cases, tetrahydro-1H-pyrrolo[1,2-a]imidazol-2-ones were obtained with perfect diastereoselectivity to give trans-isomer in… read more here.
Keywords: tetrahydro pyrrolo; pyrrolo imidazol; imidazol ones; cyclization reaction ... See more keywords
Total Synthesis of (−)-Lepadiformine A viaRadical Translocation–Cyclization Reaction
Sign Up to like & getrecommendations! Published in 2020 at "Organic Letters"
DOI: 10.1021/acs.orglett.0c00474.s001
Abstract: Total synthesis of (−)-lepadiformine A featuring construction of the 1-azaspiro[4.5]decane skeleton by a highly diastereoselective radical translocation–cyclization reaction of a γ-lactam derivative bearing a chiral butenolide moiety is described. The enantioselective construction of butenolide is… read more here.
Keywords: translocation cyclization; total synthesis; cyclization reaction;
Silver-Catalyzed Cascade Cyclization Reaction of Isocyanides with Sulfoxonium Ylides: Synthesis of 3-Aminofurans and 4-Aminoquinolines.
Sign Up to like & getrecommendations! Published in 2020 at "Organic letters"
DOI: 10.1021/acs.orglett.0c02835
Abstract: A silver-catalyzed cascade cyclization reaction of isocyanides with sulfoxonium ylides has been developed for the first time. This reaction provides a new and efficient method for the construction of highly functionalized 3-aminofurans and 4-aminoquinolines from… read more here.
Keywords: silver catalyzed; reaction isocyanides; cascade cyclization; cyclization reaction ... See more keywords
Directed Copper-Catalyzed Tandem Radical Cyclization Reaction of Alkyl Bromides and Unactivated Olefins.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c00835
Abstract: The free radical cyclization reaction is a promising strategy for ring framework formation. Herein, we report a copper-catalyzed tandem radical cyclization strategy for preparing substituted lactam derivatives. This reaction proceeds through a radical coupling approach,… read more here.
Keywords: copper catalyzed; cyclization; radical cyclization; cyclization reaction ... See more keywords
Visible-Light Photoredox Catalyzed Oxidative/Reductive Cyclization Reaction of N-Cyanamide Alkenes for the Synthesis of Sulfonated Quinazolinones.
Sign Up to like & getrecommendations! Published in 2017 at "Organic letters"
DOI: 10.1021/acs.orglett.7b02163
Abstract: An efficient photocatalytic oxidative/reductive cyclization reaction of N-cyanamide alkenes with arylsulfinic acids or arylsulfonyl chlorides, which proceeds through C-S, C-C, and C-N bond formations, is reported. This photocatalytic reaction was carried out under mild conditions,… read more here.
Keywords: sulfonated quinazolinones; reaction cyanamide; reductive cyclization; cyclization reaction ... See more keywords
Tandem Oxidative Ring-Opening/Cyclization Reaction in Seconds in Open Atmosphere for the Synthesis of 1-Tetralones in Water-Acetonitrile.
Sign Up to like & getrecommendations! Published in 2018 at "Organic letters"
DOI: 10.1021/acs.orglett.8b03246
Abstract: A mild and practical tandem oxidative ring-opening/cyclization reaction mediated by Ce4+ for the synthesis of 1-tetralones is presented. This rapid transformation was completed within 30 s and conducted in an open reactor at 0 °C… read more here.
Keywords: tandem oxidative; ring opening; oxidative ring; cyclization reaction ... See more keywords
One step construction of a taxane-like skeleton by a diendiyne metathesis cyclization reaction
Sign Up to like & getrecommendations! Published in 2017 at "Organic chemistry frontiers"
DOI: 10.1039/c6qo00741d
Abstract: One-step cyclization for the formation of the characteristic tricyclic system of taxanes is described. This process is based on a cascade metathesis cyclization reaction that allows the preparation of novel taxane derivatives in a fast… read more here.
Keywords: metathesis cyclization; cyclization; one step; cyclization reaction ... See more keywords
Synthesis of Functionalized Azepines via Cu(I)-Catalyzed Tandem Amination/Cyclization Reaction of Fluorinated Allenynes
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DOI: 10.3390/molecules27165195
Abstract: An efficient method for the selective preparation of trifluoromethyl-substituted azepin-2-carboxylates and their phosphorous analogues has been developed via Cu(I)-catalyzed tandem amination/cyclization reaction of functionalized allenynes with primary and secondary amines. read more here.
Keywords: catalyzed tandem; tandem amination; cyclization reaction; via catalyzed ... See more keywords