Výsledky vyhledávání - "M. M. El Gaied"

Diels–Alder reaction of β-chloro-α,β-unsaturated aldehydes with cyclopentadiene: an experimental and theoretical study

Autor: Khaled Essalah, M. M. El Gaied, M. A. K. Sanhoury, Thouraya Barhoumi-Slimi, Michèle Ourévitch

Publikováno v: Structural Chemistry. 25:799-808

The Diels–Alder cycloaddition reactions of four β-chloro-α,β-unsaturated aldehydes 1–4 with cyclopentadiene were carried out. Only two of these aldehydes (3 and 4) were reactive and afforded highly functionalized norbornene isomers 5–10 in g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f796873c4fbdcbecebb61a9828a46edb
https://doi.org/10.1007/s11224-013-0339-5

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Characterization and stereochemistry of alkyl 2-chloro-3-formylacrylates: Experimental NMR and theoretical DFT studies

Autor: M. M. El Gaied, M. R. Khaddar, Thouraya Barhoumi‐Slimi, M. T. Ben Dhia, M. Nsangou

Publikováno v: Journal of Structural Chemistry. 51:251-257

The synthesis of alkyl 2-chloro-3-formylacrylates 1 from alkyl pyruvates was carried out using Vilsmeier reaction. The reaction is highly stereoselective and leads to a 95:5 mixture of Z and E stereoisomers. Both stereoisomers were characterized by 1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c0391776e3bc693bb1857ee72d91ef03
https://doi.org/10.1007/s10947-010-0039-6

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Réaction régiospécifique des carbanions stabilisés avec la 2-(acétoxyméthyl)cyclohex-2-én-1-one: Synthèse de diénones bicycliques

Autor: M. M. El Gaied, F. Rezgui

Publikováno v: Tetrahedron. 53:15711-15716

Regiospecific replacement of acetoxy group in 2-(acetoxymethyl)-2-cyclohexenone 1 by stabilized carbanions, leads to S N 2 type products 2a-g , 5 and 6 . Bicyclic dienones 4 are prepared in “ one pot ” from the reaction of 2 with K 2 CO 3 in refl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57b79879db574375d110cd3f05031736
https://doi.org/10.1016/s0040-4020(97)10023-0

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Stereoselective Synthesis of Some Dialkyl (E)-2-Bromomethylene Glutarates

Autor: T. Ben Ayed, M. M. El Gaied, Hassen Amri

Publikováno v: Synthetic Communications. 25:2981-2987

Reaction of 2-bromo-2-bromomethyl glutaric acid esters with tetraalkylammonium fluoride in HMPA, conveniently provides the corresponding dialkyl (E)-2-bromomethylene derivatives in good yields.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::18694a6f419fb63949d95195f01414da
https://doi.org/10.1080/00397919508011429

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Addition conjuguée d'amines primaires aux composés acryliques α-(1-hydroxy)alkylés : Nouvelles synthèses de β-et de γ-lactames polyfonctionnels

Autor: M. M. El Gaied, Jean Villieras, H. Amri, T. Ben Ayed

Publikováno v: Tetrahedron. 51:9633-9642

Absract Direct condensation, in methanol, of primary amines on ethyl-α-(1 -hydroxyalkyl)acrylates and 2-(1-carbethoxy-1-hydroxyethyl)acrylonitrile yielded respectively to α-(1-hydroxyalkyl)-β-lactames and α,β-difunctionalized γ-lactames in good

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b84743734a369699f8265240675645c3
https://doi.org/10.1016/0040-4020(95)00538-j

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ChemInform Abstract: Stereoselective Synthesis of Some Dialkyl (E)-2-Bromomethylene Glutarates

Autor: Hassen Amri, T. Ben Ayed, M. M. El Gaied

Publikováno v: ChemInform. 26

Reaction of 2-bromo-2-bromomethyl glutaric acid esters with tetraalkylammonium fluoride in HMPA, conveniently provides the corresponding dialkyl (E)-2-bromomethylene derivatives in good yields.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69f3bac75eb56442a3a0da734411de91
https://doi.org/10.1002/chin.199547102

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ChemInform Abstract: Reactivity of β-(Trifluoromethyl)acroleins Towards Primary Alkyl- (or Aryl-) Amines: Synthesis of (Trifluoromethyl)-1-aza-1,3-dienes and Secondary (Trifluoromethyl)allylamines

Autor: G. Alvernhe, A. Selmi, M. M. El Gaied

Publikováno v: ChemInform. 26

Vilsmeier's reaction on trifluoroketones leads to β-chloro-β-(trifluoromethyl)acroleins. The addition of primary alkyl- or aryl-amines to these acroleins leads in all cases to the formation of stable (trifluoromethyl)-1-aza-1,3-dienes which can be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b9ec4633374b69bb76a9258519c249eb
https://doi.org/10.1002/chin.199541129

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