On the Formation of “Free Radicals” from Alkylcobalt Complexes | Zendy

Giese Bernd | Zendy; Hartung Jens | Zendy; He Jianing | Zendy; Hüter Ottmar | Zendy; Koch Andreas | Zendy

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On the Formation of “Free Radicals” from Alkylcobalt Complexes

Author(s) -

Giese Bernd,

Hartung Jens,

He Jianing,

Hüter Ottmar,

Koch Andreas

Publication year - 1989

Publication title -

angewandte chemie international edition in english

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 0570-0833

DOI - 10.1002/anie.198903251

Subject(s) - radical , chemistry , pyridine , reactivity (psychology) , vitamin b12 , photochemistry , cobalt , photodissociation , catalysis , selectivity , medicinal chemistry , organic chemistry , biochemistry , medicine , alternative medicine , pathology

The photolysis of alkylcobaloximes such as 1 affords free radicals. This was deduced from reactivity and selectivity studies in which the intermediates generated from cobaloximes as well as via vitamin B 12 behaved precisely as those from other radical sources. This finding is very important for the planning of syntheses and has implications for the discussions of vitamin B 12 ‐catalyzed reactions in living organisms. Hitherto, the general opinion was that radicals so generated are somewhat stronger bound to the cobalt complex (dmgH 2 = 2,3‐butanedionedioxime, py = pyridine).

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