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Photochemical induced formation of α‐alkylamino or alkylaminyl radicals from secondary amines: Reaction with 4‐pyridinecarbonitrile
Author(s) -
Caronna Tullio,
Morrocchi Sergio
Publication year - 1992
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570290451
Subject(s) - chemistry , benzophenone , radical , photochemistry , photodissociation , irradiation , reaction mechanism , organic chemistry , catalysis , physics , nuclear physics
The direct photolysis at 254 nm of 4‐pyridinecarbonitrile in the presence of some aliphatic secondary amines brought to the substitution of the CN group and to the formation of 4‐α‐alkylaminopyridines, whereas the irradiation in the presence of benzophenone at 350 nm yields 4‐alkylaminylpyridines and 4‐diphenylketylpyridine. A mechanism is proposed to explain the different course of the reaction under the two different conditions.