Preparation of sterically protected 3,4-bis[(2,4,6-tri-tert-butylphenyl)phosphinidene]cyclobutene derivatives having ring-fused structures |
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Authors: | Yamada Naoki Abe Keita Toyota Kozo Yoshifuji Masaaki |
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Institution: | Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980-8578, Japan. |
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Abstract: | reaction: see text] Sterically protected 3,4-diphosphinidenecyclobutenes, having ring-fused structures, were prepared. Structures of 8,9-bis(2,4,6-tri-tert-butylphenyl)phosphinidene]bicyclo5.2.0]non-1(7)-ene and its dichloropalladium(II) complex were analyzed by X-ray crystallography. A geometrical change induced by the complex formation was exhibited by X-ray crystallographic analysis. The geometrical change in solution was also suggested by (1)H NMR spectroscopy in CDCl(3). |
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