24686-81-5Relevant academic research and scientific papers
Preparation method and application of cross-linked acid system high-temperature-resistant acidizing corrosion inhibitor
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Paragraph 0040; 0055-0056; 0061- 0062; 0066-0067, (2020/08/22)
The invention relates to a preparation method and application of a cross-linked acid system high-temperature-resistant acidizing corrosion inhibitor. The preparation method comprises the following steps: respectively adding an aldehyde monomer, a ketone monomer and an amine monomer into a reactor; performing dispersing with absolute ethyl alcohol; and performing reacting at a temperature of 60-100DEG C to obtain Mannich base; and after the system is cooled, adding halogenated alkane, and continuously reacting at a temperature of 60-100 DEG C to obtain a Mannich base quaternary ammonium salt corrosion inhibitor. The obtained Mannich base quaternary ammonium salt corrosion inhibitor can be directly used without purification. The acidizing corrosion inhibitor provided by the invention has better temperature resistance and compatibility, is used at a high temperature of 180 DEG C, and is suitable for various processes of oil field acidizing construction.
Alkoxide activation of aminoboranes towards selective amination
Sole, Cristina,Fernandez, Elena
supporting information, p. 11351 - 11355 (2013/11/06)
Piece of the (inter)action: The interaction of alkoxides with the sp 2 Bpin (pin=pinacol) moiety in aminoboranes forms the in situ Lewis acid-base adduct [RO-→B(OR)2-N(R′)2] which enables the amino moiety to react as a strong nucleophile with several electrophiles, thus providing amino alcohols, β-enamino esters, and β-hydroxy amides in a direct and remarkably selective way (see scheme). Copyright
