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CIDNP of 13C and 1H nuclei in the reactions of cyclohexadienone carbenes

✍ Scribed by G. A. Nikiforov; Sh. A. Markaryan; L. G. Plekhanova; B. D. Sviridov; S. V. Rykov; V. V. Ershov; A. L. Buchachenko; T. Pehk; T. Saluvere; E. Lippmaa

Publisher: John Wiley and Sons
Year: 1973
Tongue: English
Weight: 326 KB
Volume: 5
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270050707

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✦ Synopsis

Abstract

Thermal decomposition of 4‐diazo‐2,6‐di‐tert‐butyl‐2, 5‐cyclohexadien‐1‐one in perhalogenated solvents has been investigated. The decomposition reaction proceeds via a carbene intermediate first to a singlet and then to an effectively triplet free encounter radical pair formed in a halogen abstraction reaction. The polarisation of the stable reaction product is determined by competing processes in the primary cage, intersystem crossing and escape from the cage.

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