3437-84-1Relevant articles and documents
Reactions of alkyl radicals with substituted toluenes and the effect of substituents on dissociation energies of benzyl C-H bonds
Arafat, Abdelfattah M.,Mathew, Samuel K.,Akintobi, Solademi O.,Zavitsas, Andreas A.
, p. 2226 - 2242 (2006)
Reactions of isopropyl and of undecyl radicals with meta- and para-substituted toluenes are reported. The results demonstrate that the reactivities of toluenes are due to both benzyl-H abstraction and addition of the alkyl radicals to the aromatic ring. Relative reactivities yield curved Hammett plots, consistent with kinetic data reported by Dutsch and Fischer. Abstractions and ring additions occur with comparable rates, but opposite Hammett slopes. Addition is favored by electron-withdrawing and abstraction by electron-donating substituents. The effects of substituents on the dissociation energies of benzyl C-H bonds are shown to be the major factor influencing reaction rates for benzyl-H abstraction by alkyl radicals.
PROCESS FOR THE PRODUCTION OF DIACYL PEROXIDES
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Page/Page column 15; 16, (2020/12/30)
Process for the production of a diacyl peroxide involving the reaction of an anhydride with an aldehyde and oxygen, removal of the formed carboxylic acid, production of an anhydride from said carboxylic acid, and recycling of the anhydride within the process.
Method for continuously producing diisobutyryl peroxide through multipoint feeding and reinforced mixing
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Paragraph 0025-0060, (2020/05/14)
The invention discloses a method for continuously producing diisobutyryl peroxide by multi-point feeding and enhanced mixing. The method comprises the following steps: (1) continuously feeding a hydrogen peroxide aqueous solution and an alkaline aqueous solution stream 1 into a first flow reactor to carry out salt forming reaction; (2) reacting the reaction solution obtained in the step (1) and acontinuously added isobutyryl chloride solution stream 1 for generating IBP in a second flow reactor; (3) feeding the reaction solution obtained in the step (2) and a continuously added aqueous alkalistream 2 into a third flow reactor for salt forming reaction; and (4) reacting the reaction solution obtained in the step (3) and the continuously added isobutyryl chloride solution stream 2 for generating IBP in a fourth flow reactor; wherein the IBP is abbreviation of diisobutyryl peroxide. According to the method disclosed by the invention, side reactions such as acyl chloride hydrolysis can be obviously reduced, the IBP yield is improved, and reaction heat is removed in time, so that the whole reaction is carried out under safe and environment-friendly continuous conditions.
