86841-00-1Relevant academic research and scientific papers
Stannous salicylate and application in polyurethane foam
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Paragraph 0011; 0043-0044; 0050-0052, (2022/01/05)
The invention relates to the field of chemical engineering, and relates to an organic tin catalyst, in particular to stannous salicylate and application in preparation of polyurethane foam. According to the invention, a synthesis method of aminosalicylic acid and alkyl salicylic acid containing long alkyl chains, and then the aminosalicylic acid and alkyl salicylic acid are used as raw materials to react with stannous oxide to generate stannous salicylate; ompared with traditional stannous carboxylate, only carboxyl in the traditional stannous carboxylate is coordinated with a tin center, and the hydroxyl and carboxyl in the stannous salicylate provided by the invention are coordinated with the tin center at the same time, so that the coordination compound is more stable and higher in catalytic activity; and the method for synthesizing the long alkyl chain aminosalicylic acid is not reported in public literatures, and the method is cheap in reagent, simpler in formula, more convenient to operate, green, safe, efficient, environmentally friendly and suitable for industrial production.
The Coordinative Behaviour of N-Substituted 2-(Δ2-Imidazolin-2-yl)-phenols as Metal Extractants
Beger, J.,Wagner, G.,Dinjus, U.,Goerls, H.,Uhlig, E.,Sieler, J.
, p. 211 - 224 (2007/10/02)
N-Substituted 2-(Δ2-imidazolin-2-yl)-phenols (R4NNOH) are obtained by the reaction of N-alkyl diaminoethane-1,2 and 2-hydroxybenzoic acid esters.In contrast to many other copper(II) complexes with the donor set N2O22- (A),
O- and N-Alkylsubstituted 2-(2'-Hydroxyphenyl)-benzimidazoles and -1,3,4-Oxadiazoles as Complexing and Extracting Agents for Copper-II-Ions
Beger, J.,Wagner, G.,Uhlig, E.,Dinjus, U.
, p. 708 - 718 (2007/10/02)
2-(2'-Alkoxyphenyl)-benzimidazoles 1, 1-alkyl-2-(2'-hydroxyphenyl)-benzimidazoles 2, 2-(2'-hydroxy-4'-alkoxyphenyl)-benzimidazoles 3, 2-(2',4'-dialkoxyphenyl)-benzimidazoles 4 and 1-alkyl-2-(2'-hydroxy-5'-nitrophenyl)-benzimidazoles 7 are synthesized by condensation of 2-hydroxybenzoic acid derivatives and o-phenylendiamine or its derivatives.Alkyl chains (C4, C8 or C12) are introduced by alkylation before or after the ring closure in order to increase the solubility of the reagent in toluene or n-octane.Furthermore the extraction properties of the benzimidazoles are investigated.Also some new analogous compounds of the benzothiazole and the 1,3,4-oxadiazole series were synthesized.
