Synthesis of a 1,3-Diphosphacyclobutane-2,4-diyl from MesCP

Synthesis of a 1,3-Diphosphacyclobutane-2,4-diyl from MesCP

A very stable biradical, 2, was prepared from 1 (see picture). The deep‐blue/violet biradical was stable in the air for several minutes. The sp2‐hybridized carbon radical centers of 2 were confirmed by X‐ray crystallography and its reversible oxidation was characterized by cyclic voltammetry. Mes*=2...

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Veröffentlicht in:Angewandte Chemie International Edition 2003-08, Vol.42 (32), p.3802-3804
Hauptverfasser: Sugiyama, Hiroki, Ito, Shigekazu, Yoshifuji, Masaaki
Format: Artikel
Sprache:eng
Schlagworte:
heterocycles
phosphaalkynes
protecting groups
radicals
structure elucidation
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Zusammenfassung:A very stable biradical, 2, was prepared from 1 (see picture). The deep‐blue/violet biradical was stable in the air for several minutes. The sp2‐hybridized carbon radical centers of 2 were confirmed by X‐ray crystallography and its reversible oxidation was characterized by cyclic voltammetry. Mes*=2,4,6‐tBu3C6H2.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200351727