Nejvíce citovaný článek - PubMed ID 17637032
An efficient and simple methodology for Ullmann Cu(I)-catalyzed synthesis of di- and trisubstituted 1,3,5-triazine derivatives from dichlorotriazinyl benzenesulfonamide and corresponding nucleophiles is reported. Cations Cu(I) supported on macroporous and weakly acidic, low-cost industrial resin of polyacrylate type were used as a catalyst. The reaction times and yields were compared with traditional synthetic methods for synthesis of substituted 1,3,5-triazine derivatives via nucleophilic substitution of chlorine atoms in dichlorotriazinyl benzenesulfonamide. It was found that Ullmann-type reactions provide significantly shortened reaction times and, in some cases, also higher yields. Finally, trisubstituted s-triazine derivatives were effectively prepared via Ullmann-type reaction in a one-pot synthetic design. Six new s-triazine derivatives with potential biological activity were prepared and characterized.
- Klíčová slova
- 1,3,5-triazine, Ullmann reaction, one-pot synthesis, supported Cu(I) catalyst,
- MeSH
- katalýza MeSH
- měď chemie MeSH
- molekulární struktura MeSH
- poréznost MeSH
- triaziny chemická syntéza chemie MeSH
- Publikační typ
- časopisecké články MeSH
- srovnávací studie MeSH
- Názvy látek
- měď MeSH
- triaziny MeSH
A method for preparation of a new stable Cu(I) catalyst supported on weakly acidic polyacrylate resin without additional stabilizing ligands is described. A simple and efficient methodology for Ullmann Cu(I) catalyzed C-N cross coupling reactions using this original catalyst is reported. Coupling reactions of 4-chloropyridinium chloride with anilines containing electron donating (EDG) or electron withdrawing (EWG) groups, naphthalen-2-amine and piperazine, respectively, are successfully demonstrated.
- Klíčová slova
- C-N coupling, polymer solid support, recyclable green catalyst, supported Cu(I) catalyst,
- MeSH
- 2-naftylamin chemie MeSH
- akrylové pryskyřice chemie MeSH
- aniliny chemie MeSH
- elektrony * MeSH
- katalýza MeSH
- koncentrace vodíkových iontů MeSH
- měď chemie MeSH
- opakované použití vybavení MeSH
- piperazin MeSH
- piperaziny chemie MeSH
- pyridinové sloučeniny chemická syntéza MeSH
- technologie zelené chemie MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- 2-naftylamin MeSH
- akrylové pryskyřice MeSH
- aniliny MeSH
- měď MeSH
- piperazin MeSH
- piperaziny MeSH
- pyridinové sloučeniny MeSH