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Decomposition of diacyl peroxides in HMPA — An electron transfer process
Author(s) -
XiangShan Jin,
TianFei Xu,
ChengXue Zhao,
XiKui Jiang
Publication year - 1985
Publication title -
acta chimica sinica english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 0256-7660
DOI - 10.1002/cjoc.19850030211
Subject(s) - chemistry , peroxide , benzoyl peroxide , decomposition , electron transfer , thermal decomposition , solvent , molecule , photochemistry , organic peroxide , hydrogen peroxide , organic chemistry , copolymer , monomer , polymer
In hexamethylphosphoric triamide (HMPA), four representative diacyl peroxides, namely, benzoyl peroxide (1), Cyclopropylformyl peroxide (2), lauroyl peroxide (3) and trifluoroacetyl peroxide (4), all decompose at rates much higher than those expected from their unimolecular thermal decomposition, and the corresponding carboxylic acids are formed in high yields (74–97%). Furthermore, several radical colligation products formed from HMPA molecules can be identified. Evidently, the initial step in the reaction between a diacyl peroxide and the “solvent” HMPA involves an electron transfer with the latter acting as the donor.