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2008, Vol.37, No.12

1192-1193

Synthesis of Stable cis-Dichloro- and cis-Dimethylplatinum(II) Complexes Bearing Bulky Primary Phosphines and Introduction of an Alkyl Group on the Primary Phosphine Ligand

Sasamori Takahiro 1 , Kawai Masahiro 1 , Takeda Nobuhiro , Tokitoh Norihiro 1
1 Institute for Chemical Research, Kyoto University
https://doi.org/10.1246/cl.2008.1192

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Abstract
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Stable cis-dichloro- and cis-dimethylplatinum(II) complexes bearing bulky primary phosphines, such as BbtPH2 (Bbt = 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl) and TbtPH2 (Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl), were synthesized and isolated as stable compounds. The treatment of cis-[PtMe2(PH2Bbt)2] with lithium diisopropylamide (LDA) followed by the addition of an alkyl halide afforded the corresponding alkylated complexes, cis-[PtMe2(PHRBbt)(PH2Bbt)] (R=Me, Et, Bu, etc.). The spectroscopic observation of the intermediacy of the lithiated complex, cis-[PtMe2(PHLiBbt)(PH2Bbt)], has been accomplished.

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