Urša Štanfel (Avtor), Dejan Slapšak (Avtor), Uroš Grošelj (Avtor), Franc Požgan (Avtor), Bogdan Štefane (Avtor), Jurij Svete (Avtor)

Povzetek

A series of 12 silica gel-bound enaminones and their Cu(II) complexes were prepared and tested for their suitability as heterogeneous catalysts in azomethine imine-alkyne cycloadditions (CuAIAC). Immobilized Cu(II)–enaminone complexes showed promising catalytic activity in the CuAIAC reaction, but these new catalysts suffered from poor reusability. This was not due to the decoordination of copper ions, as the use of enaminone ligands with additional complexation sites resulted in negligible improvement. On the other hand, reusability was improved by the use of 4-aminobenzoic acid linker, attached to 3-aminopropyl silica gel via an amide bond to the enaminone over the more hydrolytically stable N-arylenamine C-N bond. The study showed that silica gelbound Cu(II)–enaminone complexes are readily available and suitable heterogeneous catalysts for the synthesis of 6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazoles.

Ključne besede

1,3-dipolarne cikloadicije;2,3-dihidropirazolo[1,2-a]pirazoli;z bakrom katalizirane cikloadicije;CuAIAC;azometin imini;inoni;alkini;1,3-dipolar cycloadditions;2,3-dihydropyrazolo[1,2-a]pyrazoles;copper-catalyzed azomethine imine-alkyne cycloaddition;azomethine imines;ynones;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FKKT - Fakulteta za kemijo in kemijsko tehnologijo
UDK: 547.78
COBISS: 46951171 Povezava se bo odprla v novem oknu
ISSN: 1420-3049
Št. ogledov: 179
Št. prenosov: 60
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: 1;3-dipolarne cikloadicije;2;3-dihidropirazolo[1;2-a]pirazoli;z bakrom katalizirane cikloadicije;CuAIAC;azometin imini;inoni;alkini;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-18
Letnik: ǂVol. ǂ26
Zvezek: ǂiss. ǂ2
Čas izdaje: Jan. 2021
DOI: 10.3390/molecules26020400
ID: 14503996