Structures of dibenzocycloheptenylidene-
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Masaaki Yoshifuji; Hiroaki Takahashi; Kazuho Shimura; Kozo Toyota; Ken Hirotsu;
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Article
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1997
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John Wiley and Sons
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English
โ 270 KB
Dibenzocycloheptenylidene (2,4,6-tri-t-butylphenyl)phosphine and fluorenylidene(2,4,6-tri-t-butylphenyl)phosphine were prepared by the reactions of lithium silylphosphide with benzosuberenone and fluorenone, respectively. The reactions of the phosphines with sulfur were carried out to compare the re