Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 492020

New pentacyclic ring system: intramolecular cyclization of o, o'-disubstituted bibenzothiazoles


Racane, Livio; Čičak, Helena; Mihalić, Zlatko; Karminski-Zamola, Grace; Tralić-Kulenović, Vesna
New pentacyclic ring system: intramolecular cyclization of o, o'-disubstituted bibenzothiazoles // Tetrahedron, 67 (2011), 15; 2760-2767 doi:10.1016/j.tet.2011.02.037 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 492020 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
New pentacyclic ring system: intramolecular cyclization of o, o'-disubstituted bibenzothiazoles
(New pentacyclic ring system: intramolecular cyclization of o, o'- disubstituted bibenzothiazoles)

Autori
Racane, Livio ; Čičak, Helena ; Mihalić, Zlatko ; Karminski-Zamola, Grace ; Tralić-Kulenović, Vesna

Izvornik
Tetrahedron (0040-4020) 67 (2011), 15; 2760-2767

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
benzothiazole; benzo[c]cinnoline; carbazole; reduction; oxidation;

Sažetak
Efficient methods for preparation of isomeric o, o'-diaminobibenzothiazoles (8a and 11a) and o, o'-diamino-2, 2'-dimethylbibenzothiazoles (8b and 11b), potentially valuable building blocks for construction of hitherto unknown dithiazolo annulated pentacyclic heterocycles, has been developed. The dithiazolo annulated benzo[c]cinnolines 9a, 9b and 12a were prepared from corresponding diamines by oxidation with PhI(OAc)2 in a good yield. The dithiazolo annulated carbazoles 13 and 14 were efficiently prepared from corresponding diamines by thermal cyclization in H3PO4. Unusual course of reduction and product formation of o, o'-dinitrosubstituted bibenzothiazoles 6a and 6b with SnCl2 under acidic conditions was rationalized by DFT quantum-mechanical calculations. It was suggested that cyclic products are formed from dinitroso derivatives and open-shell species immediately following on a reduction path.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Tekstilna tehnologija



POVEZANOST RADA


Projekti:
117-0000000-3283 - Istraživanje novih višenamjenskih bojila i optičkih bjelila (Racane, Livio, MZOS ) ( POIROT)
119-1191342-1339 - Molekulsko modeliranje strukture i reaktivnosti organskih spojeva (Mihalić, Zlatko, MZOS ) ( POIROT)
125-0982464-1356 - Novi heterocikli kao antitumorski i antivirusni (pametni) lijekovi (Hranjec, Marijana, MZOS ) ( POIROT)

Ustanove:
Tekstilno-tehnološki fakultet, Zagreb,
Prirodoslovno-matematički fakultet, Zagreb,
Fakultet kemijskog inženjerstva i tehnologije, Zagreb

Citiraj ovu publikaciju

Racane, Livio; Čičak, Helena; Mihalić, Zlatko; Karminski-Zamola, Grace; Tralić-Kulenović, Vesna
New pentacyclic ring system: intramolecular cyclization of o, o'-disubstituted bibenzothiazoles // Tetrahedron, 67 (2011), 15; 2760-2767 doi:10.1016/j.tet.2011.02.037 (međunarodna recenzija, članak, znanstveni)
Racane, L., Čičak, H., Mihalić, Z., Karminski-Zamola, G. & Tralić-Kulenović, V. (2011) New pentacyclic ring system: intramolecular cyclization of o, o'-disubstituted bibenzothiazoles. Tetrahedron, 67 (15), 2760-2767 doi:10.1016/j.tet.2011.02.037.
@article{article, year = {2011}, pages = {2760-2767}, DOI = {10.1016/j.tet.2011.02.037}, keywords = {benzothiazole, benzo[c]cinnoline, carbazole, reduction, oxidation, }, journal = {Tetrahedron}, doi = {10.1016/j.tet.2011.02.037}, volume = {67}, number = {15}, issn = {0040-4020}, title = {New pentacyclic ring system: intramolecular cyclization of o, o'-disubstituted bibenzothiazoles}, keyword = {benzothiazole, benzo[c]cinnoline, carbazole, reduction, oxidation, } }
@article{article, year = {2011}, pages = {2760-2767}, DOI = {10.1016/j.tet.2011.02.037}, keywords = {benzothiazole, benzo[c]cinnoline, carbazole, reduction, oxidation, }, journal = {Tetrahedron}, doi = {10.1016/j.tet.2011.02.037}, volume = {67}, number = {15}, issn = {0040-4020}, title = {New pentacyclic ring system: intramolecular cyclization of o, o'- disubstituted bibenzothiazoles}, keyword = {benzothiazole, benzo[c]cinnoline, carbazole, reduction, oxidation, } }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Uključenost u ostale bibliografske baze podataka:


  • CA Search (Chemical Abstracts)


Citati





    Contrast
    Increase Font
    Decrease Font
    Dyslexic Font