6282-12-8Relevant articles and documents
Co3O4 nanoparticles prepared by oxidative precipitation method: an efficient and reusable heterogeneous catalyst for N-formylation of amines
Marjani, Ahmad Poursattar,Hosseini, Seyed Ali,Shokri, Zahra,Maleki, Nasim
, p. 413 - 422 (2017/01/14)
Abstract: N-formylation of different amines was carried out with formic acid in the presence of the Co3O4 nanoparticles as an efficient, stable heterogeneous catalyst to give the corresponding formamides under solvent-free conditions. This method has advantages over the reported methods such as high yields, mild conditions, easy work-up and short reaction times. The catalyst was characterized by different techniques such as XRD, SEM and FT-IR spectroscopy. Graphical Abstract: [Figure not available: see fulltext.]
Functionalization of quinazolin-4-ones part 1: Synthesis of novel 7-substituted-2-thioxo quinazolin-4-ones from 4-substituted-2-aminobenzoic acids and PPh3(SCN)2
Heppell, Jacob,Al-Rawi, Jasim
, p. 162 - 174 (2014/02/14)
4-(Nitro, amino, acetylamino)-2-aminobenzoic acid were allowed to react with PPh3(SCN)2 and gave the crossholding 7-nitro, 7-acetylamino- and 7-amino-2-thioxo quinazolin-4-ones respectively. The nature of the substituent at position 4 of the 2-aminobenzoic acids has significant influence on the outcome of the cyclisation reaction with PPh 3(SCN)2. Similarly, the nature of the substituent at position 7 of the 2-substituted quinazolin-4-ones significantly affected the ease with which alkylation reactions could be performed. The alkylation selectivity of the 7- substiuted-2-thioxo quinazolin-4-ones was found to depend on the nature of the alkyl halide and the nature of the substituent at position 2.