Synthesis of New Cyclopentadienyl-, Indenyl- and Fluorenylphosphanes by the Reaction of Carbanions of the Cyclopentadienyl Type with Alkyl(aryl)chloro-N,N-dialkylaminophosphanes

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Synthesis of New Cyclopentadienyl-, Indenyl- and Fluorenylphosphanes by the Reaction of Carbanions of the Cyclopentadienyl Type with Alkyl(aryl)chloro-N,N-dialkylaminophosphanes

Vasily V. Kotov

^a,#,

, Evgeni V. Avtomonov

^b

, Nikolai A. Ustynyuk

^b

, and Dmitry A. Lemenovskii

^a

a Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 119899, Moscow, Russia

b A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str.28, 117813, Moscow, Russia

# Present address: Institute of Organic Chemistry, University of Münster, Corrensstrasse 40, D-48149 Münster, Germany

Reprint requests to Dr. Vasily V. Kotov.

Fax: +49-(0)2 51-8 33-65 03. E-mail: kww@uni-muenster.de Z. Naturforsch.56 b,812Ð822 (2001); received March30, 2001

Cyclopentadienylphosphanes, Alkyl(aryl)chloro-N,N-dialkylaminophosphanes, (Amino)cyclopentadienylphosphanes

A number of alkyl(aryl)chloro-N,N-dialkylaminophosphanes RP(Cl)NR¹R²(1aÐo) were synthesized starting from alkyl(aryl)dichlorophosphanes RPCl₂and amines by a convenient procedure withnearly quantitative yields. The reactivity of alkyl(aryl)-N,N-dialkylamino(halo- geno)phosphanes RP(Hal)NR¹R²(Hal = Cl, I) withcyclopentadienyl, bis(cyclopentadienyl), indenyl, bis(indenyl) and fluorenyl carbanions has been investigated. The new aminocyclo- pentadienylphosphanes RnCp(R)PNR¹R² 2aÐf and 3aÐc (RnCp = Ind, Flu, Cp2CMe2, Ind₂CEt₂, Ind₂(CH₂)₂) were characterized by spectroscopic techniques and elemental analy- ses. Flu(t-Bu)PN(H)t-Bu (2f) was characterized by X-ray diffraction analysis.