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Note | Regular issue | Vol 63, No. 11, 2004, pp.2591-2596
Published online, 17th September, 2004
DOI: 10.3987/COM-04-10177
Characterization of a 3,4-Dihydro-1,3,4-triphosphacyclopenta[a]indene as an Isomer of a Mes*-substituted 1,3,6-Triphosphafulvene (Mes* = 2,4,6-t-Bu3C6H2)

Shigekazu Ito, Hideaki Miyake, Hiroki Sugiyama, and Masaaki Yoshifuji*

*Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan


Reaction of 2,2-dibromo-1-(2,4,6-tri-t-butylphenyl)-1-phosphaethene and t-butyllithium gave a 3,4-dihydro-1,3,4-triphosphacyclopenta[a]indene as an isomer of a bulky 1,3,6-triphosphafulvene, which was isolated as a major product in this reaction, and the structure was confirmed by X-Ray analysis. Spectroscopic and redox properties of the 3,4-dihydro-1,3,4-triphosphacyclopenta[a]indene have been studied.