Issue 12, 1994
From the journal:

Journal of the Chemical Society, Perkin Transactions 2

Absence of intersystem crossing in 1,4-didehydrobenzene

William B. Lott,   Tom J. Evans  and  Charles B. Grissom  

Abstract

The rate of singlet-to-triplet intersystem crossing in 1,4-didehydrobenzene (the biradical produced as a reactive intermediate in the thermal cycloaromatization of enediynes), cannot be increased by the application of an external magnetic field. The rate of product formation and the distribution of stable products of 2,3-di-n-propyl-1,4-didehydrobenzene thermolysis is unchanged at magnetic flux densities in the range 0–2000 G and at 66 000 G. Similarly, the rate of thermolysis of an unsymmetrical enediyne is insensitive to magnetic field flux in the same range. This finding precludes the modulation of enediyne reaction rates in pharmaceutical and synthetic pursuits.

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Article information

DOI
https://doi.org/10.1039/P29940002583
Article type
Paper

J. Chem. Soc., Perkin Trans. 2, 1994, 2583-2586

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Absence of intersystem crossing in 1,4-didehydrobenzene

W. B. Lott, T. J. Evans and C. B. Grissom, J. Chem. Soc., Perkin Trans. 2, 1994, 2583 DOI: 10.1039/P29940002583

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