624-17-9Relevant articles and documents
Lubricity, tribological and rheological properties of green ester oil prepared from bio-based azelaic acid
AHMED, WALED ABDO,SALIH, NADIA,SALIMON, JUMAT
, p. 1363 - 1369 (2021/06/09)
Plant oil derived compounds have been used as the raw material for the synthesis of green biolubricant. Azelaic acid derived from oleic acid is one of the interesting compounds. The synthesis of azelate esters oil based synthetic green biolubricants was carried out. The esterification process of azelaic acid with variety type of alcohols was catalyzed by concentrated H2SO4. The yields percentages of azelate esters oil produced were varied depending their overall molecular structure. The azelate esters oil properties were evaluated for their suitability as a biolubricant. The results showed that the linear azelate esters oil showed high pour point values in a range of 15 to 5°C for di-decyl azelate, di-octyl azelate and di-hexyl azelate respectively. On the other hands, the branch azelate esters oil showed very low pour point of -70, -58 and -50°C for di-2-butyloctyl azelate, di-2-ethylhexanol azelate and di-2-ethylbutyl azelate, respectively. Moreover, the linear azelate esters oil gave high values of flash point, viscosity index and oxidative stability, and they were slightly affected by branching molecule structure. The tribological and rheological properties of high molecular azelate esters oil were also performed. Subsequently, most of them were classified as non-Newtonian fluids and having boundary lubrication properties with low friction coefficient. The branch azelate esters oil is plausible to be used as green biolubricants in many applications including automotive, marine engine oils, compressor oils, hydraulic fluids, gear oils and industrial biolubricants.
Synthesis, antiproliferation, and docking studies of N-phenyl-lipoamide and 8-mercapto-N-phenyloctanamide derivatives: Effects of C6 position thiol moiety
Zhang, Shi-Jie,Hu, Wei-Xiao
, p. 3312 - 3320 (2012/11/07)
Some N-phenyl lipoamide and 8-mercapto- N-phenyloctanamide derivatives were synthesized and their in vitro antiproliferative activity was evaluated. The experimental results indicated that 8-mercapto-N-phenyloctanamides might be good histone deacetylase inhibitors rather than N-phenyl lipoamides, who had thiol moiety at C6 position. To verify the antiproliferation data on structural basis, in silico docking studies of the representative compounds into the crystal structure of histone deacetylase- like protein using AutoDock 4.0 program were performed. Furthermore, sulfur acetylated 8-mercapto-Nphenyloctanamide improved its in vitro antiproliferative activity, probably due to the increasing of its cell membrane permeability. While the identification of enzymatic target of N-phenyl lipoamides with dithiolane is still ongoing. Springer Science+Business Media, LLC 2011.
Regioselective Ring Opening of Vinylcyclopropanes by Hydrogenation with Palladium on Activated Carbon
Barrett, Anthony G. M.,Tam, William
, p. 7673 - 7678 (2007/10/03)
A highly regioselective reductive ring opening of vinylcyclopropanes induced by palladium on activated carbon has been investigated. High yields and excellent regioselectivities were observed in cleaving either the less hindered bond or the more hindered bond of the cyclopropane depending on whether the substituent on the vinylcyclopropane is capable of coordinating to Pd or not.
