Keywords: [4 + 2] Cycloaddition; Allenoate; Addition-elimination; Dienamine; [4+2] cycloaddition; Cyclohexene;
مقالات ISI [4 + 2] Cycloaddition (ترجمه نشده)
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First example of the cascade acylation/IMDAV/ene reaction sequence, leading to N-arylbenzo[f]isoindole-4-carboxylic acids possessing anti-viral activity
Keywords: [4 + 2] Cycloaddition; IMDAV reaction; Alder-ene reaction; Benzo[f]isoindoles; Anti-viral activity; [4+2] cycloaddition;
Efficient syntheses of novel indeno[1,2-b]chromenone derivatives via hetero-Diels-Alder reactions of 2-(arylmethylene)-1H-indene-1,3(2H)-diones with enaminones
Keywords: [4 + 2] Cycloaddition; [4+2] cycloaddition; Hetero Diels-Alder reaction; Enaminones; Ionic liquid; Chromenone;
The intramolecular Diels-Alder vinylthiophen (IMDAV) reaction: An easy approach to thieno[2,3-f]isoindole-4-carboxylic acids
Keywords: [4 + 2] Cycloaddition; Vinylthiophene; [4+2] cycloaddition; Intramolecular Diels-Alder reaction; IMDAV reaction; Thieno[2,3-f]isoindoles; Thiophene;
Mechanisms and stereoselectivities of NHC-catalyzed [4Â +Â 2] cycloaddition reaction between phenylacetic acid and o-quinone methide: A computational investigation
Keywords: [4 + 2] Cycloaddition; [4+2] Cycloaddition; Reaction mechanisms; Stereoselectivity; Density functional theory;
Highly regioselective synthesis of 2,3-disubstituted 2H-1-benzopyrans: Brønsted acid catalyzed [4+2] cycloaddition reaction with a variety of arylalkynes via ortho-quinone methides
Keywords: [4 + 2] Cycloaddition; Regioselective synthesis; Brønsted acid catalyst; [4+2] Cycloaddition; 2H-1-Benzopyran; ortho-Quinone methide;
Regioselective one-pot synthesis of 2,3-diaryl-2H-1-benzopyrans via Brønsted acid-catalyzed [4+2] cycloaddition of salicylaldehydes with diarylacetylenes
Keywords: [4 + 2] Cycloaddition; Regioselective synthesis; [4+2] cycloaddition; ortho-Quinonemethide; Brønsted acid catalyst; Benzopyrans;
Formal [4+2] cycloaddition of quinolines, pyridines, and isoquinolines with 3-ethoxycyclobutanones
Keywords: [4 + 2] Cycloaddition; Cyclobutanone; [4+2] cycloaddition; Quinoline; Pyridine; Isoquinoline;
Theoretical investigations towards the [4+2] cycloaddition of ketenes with 1-azadienes catalyzed by N-heterocyclic carbenes: mechanism and stereoselectivity
Keywords: [4 + 2] Cycloaddition; Density functional theory (DFT); N-Heterocyclic carbene (NHC); Reaction mechanism; Stereoselectivity; [4+2] Cycloaddition;
Highly stereo and chemoselective synthesis of tetra and pentacyclic frameworks using Solid-State Melt Reaction (SSMR)
Keywords: [4 + 2] Cycloaddition; Solid-State Melt Reaction; Hetero Diels-Alder reaction; Polycyclic compounds; Domino reaction; [4+2] Cycloaddition;
One-pot, three-component synthesis of highly functionalized pyrimidone derivatives and access to indole fused pyrimidones via palladium-catalyzed intramolecular Heck reaction
Keywords: [4 + 2] Cycloaddition; Multi-component reactions; Pyrimidone derivatives; Indole fused pyrimidones; [4+2] cycloaddition; Intramolecular Heck reaction;
Changing the regioselectivity and asynchronicity of the possible concerted [2+2] and [4+2] cycloadditions of ketene and halogenated ketenes with cyclopentadiene: a DFT survey
Keywords: [4 + 2] Cycloaddition; Ketene; Dihaloketene; Cyclopentadiene; [2+2] Cycloaddition; [4+2] Cycloaddition; Claisen rearrangement; DFT; AIM;
Unprecedented spirocyclization of 3-methyleneindoline-2-thiones during hydrolysis of the phytoalexin cyclobrassinin
Keywords: [4 + 2] Cycloaddition; [4+2] Cycloaddition; 3-Methyleneindoline-2-thiones; Cyclobrassinin; Iminodithiocarbamate; Phytoalexin;
Synthesis of small ring-containing conjugated dienes via the coupling reaction of cyclopropyl- and cyclobutylmagnesium carbenoids with α-sulfonylallyllithiums
Keywords: [4 + 2] Cycloaddition; Allylidenecycloalkane; Conjugated diene; Coupling reaction; [4+2] Cycloaddition; Magnesium carbenoid; DFT calculation;
Bifunctional cinchona alkaloids-catalyzed asymmetric [4+2] cycloaddition reaction of β,γ-unsaturated α-keto esters with oxazolones
Keywords: [4 + 2] Cycloaddition; Asymmetric catalysis; [4+2] Cycloaddition; β,γ-Unsaturated α-keto esters; Bifunctional catalysts;
N-Iodosaccharin (NISac): a new reusable catalyst for formal [2+4] cycloaddition of imines and enones
Keywords: [4 + 2] Cycloaddition; NISac; [4+2] Cycloaddition; Heterocycles; 1,3-Oxazines; Enones; Imines;
Iodine-catalyzed stepwise [4+2] cycloaddition of phenothiazine- and ferrocene-containing Schiff bases with DHP promoted by microwave irradiation
Keywords: [4 + 2] Cycloaddition; [4+2] Cycloaddition; Iodine-catalysis; Microwave-assisted reactions; Frontier molecular orbitals; DFT;
Synthesis of nitrogen bicyclic scaffolds: pyrimido[1,2-a]pyrimidine-2,6-diones
Keywords: [4 + 2] Cycloaddition; 1,3-Diazabutadienes; [4+2] Cycloaddition; Nitrogen heterocycles; Dihydropyrimidinones; Methylsulfanyl group;
An efficient synthetic route to substituted tetrahydropyrimidines by Cu(OTf)2-mediated nucleophilic ring-opening followed by the [4+2] cycloaddition of N-tosylazetidines with nitriles
Keywords: [4 + 2] Cycloaddition; Azetidine; [4+2] cycloaddition; Cu(OTf)2; SN2; Tetrahydropyrimidine; 1,3-Diamine;
Cycloaddition reactions of 1,3-diazabuta-1,3-dienes with alkynyl ketenes
Keywords: [4 + 2] Cycloaddition; 1,3-Diazabuta-1,3-dienes; Alkynyl ketenes; [2+2] Cycloaddition; [4+2] Cycloaddition; Azetidin-2-ones; Dihydropyrimidinones;
Novel synthesis of the 2-azaanthraquinone alkaloid, scorpinone, based on two microwave-assisted pericyclic reactions
Keywords: [4 + 2] Cycloaddition; Microwave; Electrocyclic reaction; [4+2] Cycloaddition; 2-Azaanthraquinone; Scorpinone;
Cyclisation of α-diazonitriles to 5-halo-1,2,3-triazoles: A computational study
Keywords: [4 + 2] Cycloaddition; Density functional theory; [2+2]; [4+2] Cycloaddition; Cyclisation; Transition states; Substituent effects;
Elucidation of the substitutent effects on the reaction pathway of the cycloaddition of 1,3-diazabuta-1,3-dienes with ketenes using DFT-based reactivity indexes
Keywords: [4 + 2] Cycloaddition; 1,3-Diazabuta-1,3-diene; [2+2] Cycloaddition; [4+2] Cycloaddition; DFT-based reactivity indexes; B3LYP calculations;
Mononuclear ruthenium complexes containing chiral aminooxazolines: Syntheses, X-ray studies and catalytic activity
Keywords: [4 + 2] Cycloaddition; Oxazoline; Ruthenium; X-ray structure; Arene complex; Catalysis; Transfer hydrogenation; [4+2] Cycloaddition
Sequential pericyclic reaction of ene-diallene: synthesis of (±)-estrone
Keywords: [4 + 2] Cycloaddition; Allenes; Tandem reaction; [4+2] Cycloaddition; Estrone;
A convenient synthetic route to 2-aryl-N-tosylazetidines and their ZnX2 (X = I, OTf) mediated regioselective nucleophilic ring opening reactions: synthesis of γ-iodoamines and tetrahydropyrimidines
Keywords: [4 + 2] Cycloaddition; 2-Aryl-N-tosylazetidine; [4+2] Cycloaddition; ZnX2 (X = I, OTf); γ-Iodoamines; Tetrahydropyrimidine;
Reaction of ene-bis(phosphinylallenes): [2+2] versus [4+2] cycloaddition
Keywords: [4 + 2] Cycloaddition; Bisallenes; [2+2] Cycloaddition; Naphtho[b]cyclobutenes; [4+2] Cycloaddition;