4231-16-7Relevant articles and documents
Synthesis and characterization of silica-polymer nanocomposites functionalized with piperazine for the synthesis of β-nitro alcohols
Sachdev, Divya,Dubey, Amit
experimental part, p. 1548 - 1556 (2012/06/18)
In order to compare the activity and selectivity for the synthesis of β-nitro alcohols, piperazine was functionalized directly and after surface modification into the ordered mesoporous SBA-15 framework. The materials were characterized by powder X-ray di
Switchable perfomance of an L-proline-derived basic catalyst controlled by supramolecular gelation
Rodriguez-Llansola, Francisco,Escuder, Beatriu,Miravet, Juan F.
scheme or table, p. 11478 - 11484 (2011/02/25)
An L-proline-derived low molecular weight gelator forms gels in nitromethane and nitroethane and acts as a basic catalyst for the Henry nitroaldol reaction of these solvents with 4-nitrobenzaldehyde and 4-chlorobenzaldehyde. The reported catalyst is effic
2-Benzyl-2-methyl-2H-benzimidazole 1,3-dioxide derivatives: Spectroscopic and theoretical study
Merlino, Alicia,Boiani, Mariana,Cerecetto, Hugo,Gonzalez, Mercedes
, p. 540 - 549 (2008/02/07)
The spectroscopic behavior of 2-benzyl-2-methyl-2H-benzimidazole 1,3-dioxide derivatives in solution was studied in terms of electronic and nuclear magnetic resonance (1H and 13C NMR) techniques. The experimental spectra were compared to the theoretical ones, obtained at DFT level, proving that the compounds adopt in solution a bird-like conformational distribution. Also, theoretically this conformational distribution resulted the most stable in gas phase. Infrared spectroscopy was used to study solid state behavior identifying experimentally the N-O stretching near to 1380, 1365 and 1225 cm-1 and the vibrational benzimidazole skeleton near to 1610 and 1590 cm-1. The vibrational spectrum was satisfactorily described by DFT calculations funding the N-O stretching as a coupled vibration near to 1470, 1350 and 1285 cm-1. The fragmentation that takes place in mass spectrometry was assigned for all of the new derivatives.