929-73-7Relevant articles and documents
Physico-chemical properties of N,N-di(2-hydroxyethyl)alkylamines
Nasrtdinova,Koltashev,Radushev,Chekanova
, (2014)
In view of potential application of N-alkyl derivatives of diethanolamine RN(CH2CH2OH)2 (R = C8H17, C10H21, C12H25, and C 14H29) as su
Synthesis, Characterization, Surface, and Thermodynamic Studies of Alkyl Tetrachloroferrates: Performance Evaluation of Their Nanostructures as Biocides
El-Shamy, Omnia A. A.,Habib, Amr O.,Mohamed, Dalia E.,Badawi, Abdelfattah M.
, p. 215 - 223 (2019/11/03)
Decyl and dodecylamino tetrachloroferrates were synthesized and characterized using Fourier-transform infrared spectroscopy (FTIR), elemental analysis, X-ray diffraction (XRD), nuclear magnetic resonance (1H-NMR), and atomic absorption spectroscopy (AAS). The surface properties of the cationic surfactants including critical micelle concentration, effectiveness, minimum surface area, and maximum surface excess were determined using surface tension measurements. The effectiveness of surface tension reduction (πcmc) was found to increase as the hydrophobic chain length increases with values of 30 and 34 mN m?1 for C10 and C12, respectively. Moreover, the effect of temperature on micellization was determined over the range of 35–55?°C. Thermodynamic parameters (ΔG°, ΔS°, and ΔH°) were calculated and the results indicate a spontaneous process for both micellization and adsorption. The nanoparticles (NC10 and NC12) of the prepared surfactants were obtained using the ball mill technique. The particle size and morphology of the nanoparticles were determined using transmission electron microscope measurements. The antibacterial study of the nanoparticle surfactants revealed their strong efficiency against fungi and different pathogenic bacteria compared with the original surfactants.
Switching the Selectivity of Cobalt-Catalyzed Hydrogenation of Nitriles
Dai, Huiguang,Guan, Hairong
, p. 9125 - 9130 (2018/09/21)
Previous studies of base metals for catalytic hydrogenation of nitriles to primary amines or secondary aldimines focus on designing complexes with elaborate structures. Herein, we report "twin" catalytic systems where the selectivity of nitrile hydrogenation can be tuned by including or omitting the ligand HN(CH2CH2PiPr2)2 (iPrPNHP). Simply treating CoBr2 with NaHBEt3 generates cobalt particles, which can catalyze the hydrogenation of nitriles to primary amines with high selectivity and broad functional group tolerance. Ligating CoBr2 with iPrPNHP followed by the addition of NaHBEt3, however, forms a homogeneous catalyst favoring secondary aldimines for both hydrogenation and hydrogenative coupling of benzonitrile.
