Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
Letter
Scope of the Thermal Cyclization of Nonconjugated Ene–Yne–Nitrile System: A Facile Synthesis of Cyanofluorenol Derivatives
Hidenori KimuraKohei TorikaiKazuhiro MiyawakiIkuo Ueda
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2008 Volume 37 Issue 6 Pages 662-663

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Abstract

Thermal cyclizations of nonconjugated ene–diyne–nitrile 1 and ene–triyne–nitrile 2 systems were examined and proved to yield not azafluorenol, but cyanofluorenol derivatives (9 and 11, respectively), indicating that the cyano groups do not participate in the radical cycloaromatization but do play important roles to determine the mode of cyclization.

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© 2008 The Chemical Society of Japan
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