Details

Autor(en) / Beteiligte

• Rostami, Amin
• Pourshiani, Omid
• Navasi, Yahya
• Darvishi, Neda
• Saadati, Shaghayegh

Titel

Magnetic nanoparticle-supported DABCO tribromide: a versatile nanocatalyst for the synthesis of quinazolinones and benzimidazoles and protection/deprotection of hydroxyl groupsElectronic supplementary information (ESI) available. See DOI: 10.1039/c7nj00479f

Erscheinungsjahr

2017-08

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 1,4-Diazabicyclo[2.2.2]octane tribromide supported on magnetic Fe 3 O 4 nanoparticles (MNPs-DABCO tribromide) as a novel heterogeneous tribromide type compound was found to be an efficient and reusable nanocatalyst for the one-pot synthesis of 2-arylquinazolin-4(3 H )-ones and 2-aryl-1 H -benzo[ d ]imidazoles through oxidative cyclization of aldehydes with 2-aminobenzamides and 1,2-phenylenediamine, respectively. Also, MNPs-DABCO tribromide catalyzed trimethylsilylation/tetrahydropyranylation and desilylation/depyranylation of a wide variety of alcohols and phenols through changing the solvent medium at room temperature. MNPs-DABCO tribromide as a magnetically reusable tribromide type nanocatalyst couples the advantages of heterogeneous and homogeneous tribromide-based systems.