142-90-5Relevant articles and documents
Novel bioactive imidazole-containing polymeric surfactants as petroleum-collecting and dispersing agents: Synthesis and surface-active properties
Tantawy, Ahmed H.,Mohamed, Hany I.,Khalil, Ahmed A.,Hebash, Kaouser A.,Basyouni, Mahmoud Z.
, p. 376 - 384 (2017)
Novel series of imidazole-containing polymers and polymeric surfactants have been synthesized via an efficient procedure. It included copolymerization of 1-vinyl-imidazole (VIM) with lauryl methacrylate (LMA) initiated by benzoyl peroxide and the 1H NMR spectroscopic data was utilized to estimate the monomer reactivity ratio. Conversion of polymers to surfactants was achieved through quaternization of the imidazole nitrogen with dimethyl sulphate. Spectroscopic techniques were used to elucidate the chemical structures of all synthesized compounds. The surface-active properties of polymeric surfactants beside their activities against various microbes were investigated. In addition, petroleum-collecting and dispersing properties of surfactants in diluted and undiluted form in varying waters were evaluated.
Broadly Applicable Ytterbium-Catalyzed Esterification, Hydrolysis, and Amidation of Imides
Guissart, Céline,Barros, Andre,Rosa Barata, Luis,Evano, Gwilherm
supporting information, p. 5098 - 5102 (2018/09/13)
An efficient, broadly applicable, operationally simple, and divergent process for the transformation of imides into a range of carboxylic acid derivatives under mild conditions is reported. By simply using catalytic amounts of ytterbium(III) triflate as a Lewis acid promoter in the presence of alcohols, water, amines, or N,O-dimethylhydroxylamine, a broad range of imides is smoothly and readily converted to the corresponding esters, carboxylic acids, amides, and Weinreb amides in good yields. This method notably enables an easy cleavage of oxazolidinone-based auxiliaries.
Process for producing methacrylic ester
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Page/Page column 5-6, (2008/06/13)
A method of producing a methacrylic acid ester which comprises carrying out an ester-exchange reaction between methyl methacrylate and an alcohol or a phenol while removing by-product methanol as an azeotropic mixture with methyl methacrylate from the reaction system under reflux conditions, by the use of a reaction apparatus equipped with a distillation column. A methacrylic acid ester is produced with a good productivity by controlling the reflux ratio.