Preparations to initiate radical reactions

摘要

Preparation comprises a mixture of dibenzoyl peroxide, where the mixture of dibenzoyl contains 50-99.7 mol.% of a symmetric dibenzoyl peroxide and 0.3-50 mol.% of unbalanced dibenzoyl peroxide. Independent claims are included for: (1) a process for preparing a mixture of dibenzoyl peroxide, comprising reacting a mixture of benzoyl chloride containing a first benzoyl chloride and a second benzoyl chloride different from it, with hydrogen peroxide, where the mixture of the benzoyl chloride contains 70-99.7 mol.% of the first benzoyl chloride and 0.3-30 mol.% of the second benzoyl chloride; (2) an asymmetrically replaced dibenzoylperoxide comprising a 2,4-dichlorobenzoyl residue and a replaced benzoyl residue consisting of 2-chlorobenzoyl, 3-chlorobenzoyl, 4-chlorobenzoyl, 2,3-dichlorobenzoyl, 2,5-dichlorobenzoyl, 2,6-dichlorobenzoyl, 3,4-dichlorobenzoyl, 3,5-dichlorobenzoyl, 2,3,4-trichlorobenzoyl, 2,3,5-trichlorobenzoyl, 2,3,6-trichlorobenzoyl, 2,4,5-trichlorobenzoyl, 2,4,6-trichlorobenzoyl, 3,4,5-trichlorobenzoyl, 2,3,4,5-tetrachlorobenzoyl, 2,3,4,6-tetrachlorobenzoyl, 2,3,5,6-tetrachlorobenzoyl or pentachlorobenzoyl; and (3) an asymmetrically substituted dibenzoyl comprising a 4-methylbenzoyl residue and a substituted benzoyl residue consisting of 2,3-dimethylbenzoyl, 2,4-dimethylbenzoyl, 2,5-dimethylbenzoyl, 2,6-dimethylbenzoyl, 3,4-dimethylbenzoyl, 3,5-dimethylbenzoyl, 2,3,4-trimethylbenzoyl, 2,3,5-trimethylbenzoyl, 2,3,6-trimethylbenzoyl, 2,4,5-trimethylbenzoyl, 2,4,6-trimethylbenzoyl, 3,4,5-trimethylbenzoyl, 2,3,4,5-tetramethylbenzoyl, 2,3,4,6-tetramethylbenzoyl, 2,3,5,6-tetramethylbenzoyl or pentamethylbenzoyl.