Results 161 to 170 of about 11,995 (215)
Some of the next articles are maybe not open access.
The stereodynamics of macrocyclic succinimide‐thioethers
Journal of Peptide Science, 2018Maleimide‐thiol coupling is a popular bioconjugation strategy, but little is known about the stereoselectivity and the stereodynamics of the succinimide thioether formed in a biopolymer environment. We used thiol 1,4‐addition for the macrocyclisation of 5 designed pentapeptides with the ringsize of hexapeptides because they incorporate the succinimide ...
Stefan Lenz, Philip Horx, Armin Geyer
openaire +2 more sources
Interfacial Characterization of Succinimide Surfactants
Langmuir, 1997The interfacial and nonaqueous solution properties of model engine oil antisludge dispersants have been characterized. Straight chain C8−C18 mono, bis, and tris succinimides were synthesized with polar headgroups of different dimensions and varying nitrogen content.
Tomlinson, A +4 more
openaire +3 more sources
The electrochemical reduction of succinimide
Tetrahedron, 1980Abstract A solution of succinimide in ether acetonitrile or N, N-dimethylformamide containing tetra-n-butylammonium fluoborate shows a single, irreversible reduction wave at a platimum cathode by cyclic voltammetry. Coulometry demonstrates that a single electron is transferred.
W.Michael Moore +2 more
openaire +1 more source
Purification of succinimide additives
Chemistry and Technology of Fuels and Oils, 19711. To purify Dipol 45 additive it is desirable to use the method of filtration with use of auxiliary substances such as perlite of the above-mentioned grain-size composition. 2. It has been established that filtration of succinimide additive with use of auxiliary substances takes place with gradual obstruction of the pores. 3.
A. S. Soroka +3 more
openaire +1 more source
Synthesis of a succinimide dispersant
Chemistry and Technology of Fuels and Oils, 19681. Conditions for carrying out the two stages in the preparation of succinimide additives have been established. 2. The physicochemical properties of the synthesized samples of additives have been studied. The nitrogen content of the final additive and its alkalinity increase as the amine and imine group content of the polyethylene ...
I. F. Blagovidov +7 more
openaire +1 more source
Organic & Biomolecular Chemistry, 2003
In the present study, we have modelled the nucleophilic attack of water and a hydroxyl anion on the carbonyl carbon of a succinimide derivative leading to aspartate and aspartic acid. Calculations have been carried out at the B3LYP/6-31 +G* level in a vacuum. The IEF-PCM methodology has been used to carry out single point calculations in solution.
F, Aylin +2 more
openaire +2 more sources
In the present study, we have modelled the nucleophilic attack of water and a hydroxyl anion on the carbonyl carbon of a succinimide derivative leading to aspartate and aspartic acid. Calculations have been carried out at the B3LYP/6-31 +G* level in a vacuum. The IEF-PCM methodology has been used to carry out single point calculations in solution.
F, Aylin +2 more
openaire +2 more sources
Palladium-Catalyzed Aminocarbonylation of Alkynes to Succinimides
The Journal of Organic Chemistry, 2014Succinimide derivatives are useful building blocks for the synthesis of natural products and drugs. We describe an efficient route to succinimide derivatives comprising Pd(xantphos)Cl2-catalyzed aminocarbonylation of alkynes with aromatic or aliphatic amines in the presence of p-TsOH.
Liu, Huizhen +2 more
openaire +4 more sources
Micellization and Adsorption of a Series of Succinimide Dispersants
Langmuir, 2008The efficiency of a series of nonionic dispersants at stabilizing carbon-rich particles in oil was evaluated. The dispersants were synthesized by coupling a polyamine to two polyisobutylenes terminated at one end with a succinic anhydride (PIBSA). Their chemical composition was characterized by FTIR absorption.
Yu, Shen, Jean, Duhamel
openaire +2 more sources
Infrared analysis of peptide succinimide derivatives
International Journal of Peptide and Protein Research, 1993In order to establish parameters to identify imide derivatives formed during in vitro aging of aspartylalanyl‐containing proteins, a dipeptide and a tetrapeptide containing this sequence were acidified and heated in vacuo. The formation of succinimide derivatives could be confirmed by FTIR and Raman spectroscopy.
A M, Pistorius +2 more
openaire +2 more sources
Mechanism of the cleansing action of succinimides
Chemistry and Technology of Fuels and Oils, 19681. The detergent and stabilizing effect of motor oil additives, determined in the laboratory by radioactive tracer techniques, make it possible to broaden the concept of the mechanism of their detergent effect and with a better theoretical background create compound additives whereby cooperative and antagonistic effects in the different compound ...
I. F. Blagovidov +4 more
openaire +1 more source