5326-81-8Relevant articles and documents
New interlocked molecules generated from a podand containing urea units and imidazolium salts using an anion template
Tomapatanaget, Boosayarat,Tuntulani, Thawatchai,Wisner, James A.,Beer, Paul D.
, p. 663 - 666 (2004)
A podand containing urea units (L) was found to form interlocked structures with 2,5-dihexylamide imidazolium salts (3·X), 2,5-dihexyl imidazolium salts (4·X), and 2,5-dihexyl benzoimidazolium salts (5·X), where X=Cl-, Br-, and PF6 - using anions as templates. The binding ability of L and guest molecules was evaluated by 1H NMR titrations in CDCl3. It was found that L could form complexes with guest molecules in the following order, 3·X>5·X>4·X. Stabilities of the complexes also depended on shape of the templated anions: Cl->Br -?PF6-. Hydrogen bonding and π-π stacking interactions played an important role in the self-assembling of these interlocked molecules.
2,5-dialkylacetamide-1,3,4-thiadiazole for biodegradable lubricating oil additives, and preparation method thereof
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Paragraph 0041, (2017/06/02)
The invention discloses 2,5-dialkylacetamide-1,3,4-thiadiazole for biodegradable lubricating oil additives, and a preparation method thereof, wherein the structure of the 2,5-dialkylacetamide-1,3,4-thiadiazole is represented by a formula (1), R is a C1-C30 linear chain or branched chain alkyl group, 2,5-dimercapto-1,3,4-thiadiazole, n-butylamine, dodecylamine and chloroacetyl chloride are adopted as raw materials, triethylamine is adopted as an acid binding agent, dichloromethane is adopted as a solvent, an intermediate alkyl chloroacetamide is firstly obtained, and then the target product is obtained. According to the present invention, the source of the used raw materials is sufficient, the price of the used raw materials is low, the prepared intermediate chloroacetamide uses triethylamine as the acid binding agent, the synthesis process condition is mild, the process route is simple, the yield is high, and the obtained product has excellent extreme pressure wear resistance, has the good biodegradation performance after the use, and is the environmentally friendly multifunctional lubricating oil additive.
Alkyl acetamidobenzotriazole derivative lubricating oil additive and preparation method thereof
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Paragraph 0045, (2018/04/01)
The invention discloses a biodegradable alkyl acetamidobenzotriazole derivative lubricating oil additive which does not contain sulfur, phosphorus, halogens and metal elements as well as a preparation method and application thereof. The preparation method comprises the following steps: under the action of alkali, performing amidation on alkyl amine and chloroacetyl chloride to obtain alkyl chloroacetamide; and then performing a nucleophilic substitution reaction with benzotriazole to obtain a target compound of a formula I. The preparation method disclosed by the invention is simple in preparation method, mild in process condition, easily available in raw material, low in preparation cost and high in synthetic yield. The novel alkyl acetamidobenzotriazole derivative can be independently used as an extreme pressure anti-wear corrosion-resistant additive of lubricating oil, also can be used with other lubricating oil additives in a compound manner, also can be used in common working conditions and high-temperature working conditions, can improve the bearing capacity of basic oil obviously and improve the anti-wear performance, and is the lubricating oil additive which is environmentally friendly and multi-functional. The formula I is as shown in the specification.
