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Overwhelming decomposition of 4‐bromo‐4′‐cyanomethylbiphenylyl radical anion without electron transfer to 4,4′‐dibromobiphenyl
Author(s) -
Wu GuoSheng,
Liu An,
Hu Jun,
Zeng FanWen,
Wu BiQi
Publication year - 1994
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19940120208
Subject(s) - chemistry , yield (engineering) , nucleophile , medicinal chemistry , bromine , decomposition , ion , electron transfer , quantum yield , photochemistry , organic chemistry , catalysis , fluorescence , materials science , physics , quantum mechanics , metallurgy
Dibromobiphenyl reacted with cynomethyl anion in ammonia under irradiation to form nucleophilic bis‐substituted product in high yield without substantial monosubstituted product. Quantum yields far the formations of bis‐ and monosubstituted products were found to be 85.6 and 2.3×10 −5 respectively while the corresponding pseudo‐first‐order rates were 6.9×10 −3 and 5.2×10 −10 mol·L −1 ·S −1 . Block up the possible electron transfer of 4‐brome‐4′‐cyanomethyl‐biphenylyl radical anion to 4‐cyanomethyl‐biphenylyl radical and bromine ion.