A multidisciplinary study of chemico-physical properties of different classes of 2-aryl-5(or 6)-nitrobenzimidazoles: NMR, electrochemical behavior, ESR, and DFT calculations

Autor: El Mostapha Rakib, Carla Boga, Matteo Calvaresi, Mohamed Chigr, Paola Franchi, Isacco Gualandi, Aziz Ihammi, Marco Lucarini, Gabriele Micheletti, Domenico Spinelli, Domenica Tonelli

Publikováno v: Arabian Journal of Chemistry, Vol 14, Iss 6, Pp 103179- (2021)

Continuing in our researches on the syntheses, reactivity, pharmacological/biological activities of heterocyclic compounds containing one or more nitrogen atoms we have examined some chemico-physical properties (1H and 13C NMR, electrochemical behavi

Externí odkaz: https://doaj.org/article/e0ab703571084ac0a48197fcfb4ff93c

Crystal structure of N-(1-allyl-3-chloro-1H-indazol-5-yl)-4-methylbenzenesulfonamide

Autor: Hakima Chicha, El Mostapha Rakib, Mohamed Chigr, Mohamed Saadi, Lahcen El Ammari

Publikováno v: Acta Crystallographica Section E, Vol 70, Iss 9, Pp o1041-o1042 (2014)

The 3-chloro-1H-indazole system in the title molecule, C17H16ClN3O2S, is almost planar, with the largest deviation from the mean plane being 0.029 (2) Å for one of the N atoms. This system is nearly perpendicular to the allyl chain, as indicated by

Externí odkaz: https://doaj.org/article/d30f8a6485db400780139a56c72341fb

One-pot synthesis of new 6-pyrrolyl- N -alkyl-indazoles from reductive coupling of N -alkyl-6-nitroindazoles and 2,5-hexadione

Autor: Hakima Chicha, Mohamed Chigr, El Mostapha Rakib, Mohamed Saadi, Mohamed El Ghozlani, Najat Abbassi, Lahcen El Ammari, Domenico Spinelli

Publikováno v: Tetrahedron Letters. 57:113-117

One-pot synthesis of 6-pyrrolyl- N -alkyl-indazoles by the reductive coupling of N -alkyl-6-nitroindazoles and 2,5-hexadione was investigated in the presence of different reducing agents (SnCl 2 /AcOH and In/AcOH in THF). Indazoles 5a – h and 6a �

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8071226f343e8e00e2f3c6473a174f6c
https://doi.org/10.1016/j.tetlet.2015.11.071

Crystal structure of 3-chloro-1-methyl-5-nitro-1H-indazole

Autor: Mohamed Chigr, Assoman Kouakou, Lahcen El Ammari, Mohamed Saadi, El Mostapha Rakib

Publikováno v: Acta Crystallographica Section E: Crystallographic Communications
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 11, Pp o834-o835 (2015)

The molecule of the title compound, C8H6ClN3O2, is built up from fused five- and six-membered rings connected to a chlorine atom and to nitro and methyl groups. The indazole system is essentially planar with the largest deviation from the mean plane

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d443d2e4d341304ac4b676e1891e3fd4
https://doi.org/10.1107/s2056989015018411

ChemInform Abstract: Diels-Alder Reactions Between Dienamides and Quinones: Stereochemistry of the Cycloadditions and Cytotoxic Activity of the Adducts

Autor: Houda Fillion, J. Riondel, M. Berlion, H. Beriel, Mohamed Chigr, A. Rougny

Publikováno v: ChemInform. 21

Tetrahydronapthoquinones and tetrahydroanthraquinones bearing an amido group have been prepared by Diels-Alder reactions between (E)-l-(N-carbobenxyloxyamino)-1, 3-butadiene (2) or (E)-l-(N-benzoyl-N-benzylamino)-1, 3-butadiene (5) and venzoquinone o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ae16a1f43f5936eab77d93592832de1d
https://doi.org/10.1002/chin.199045074