Aminolysis of [Cp*Ru(μ-OEt)] 2 (Cp* = η 5 -C 5 Me 5 ) with sulfonamides: Synthesis of neutral, zwitterionic, and anionic Cp*Ru terminal sulfonamido complexes

作者: Shin Takemoto , Yoshihiro Yumoto , Hiroyuki Matsuzaka

DOI: 10.1016/J.JORGANCHEM.2016.02.029

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摘要: Abstract The reaction of [Cp*Ru(μ-OEt)]2 (1) with sulfonamides affords terminal sulfonamido complexes via alkoxo-sulfonamido exchange and either symmetrical or unsymmetrical cleavage the dimeric structure. neutral phosphine-ligated monomeric [Cp*Ru(NHTs)(PR3)n] (R = Cy, n = 1; R = Me, n = 2) are obtained by sequential treatment 1 TsNH2 PR3 in THF. When above is conducted absence PR3, a formally zwitterionic dinuclear complex [Cp*Ru−(NHTs)(μ-κ1:η6-NHTs)Ru+Cp*] isolated. aminolysis toluene, trapping Cp*Ru+ fragment solvent molecule occurs to give fully ionic salt [Cp*Ru(η6-toluene)][Cp*Ru(NHTs)2] (4a). 16-electron anionic bis(tosylamido) 4a reacts CO CNtBu, yielding 18-electron [Cp*Ru(NHTs)(L)2] (L = CO, CNtBu) free tosylamide anion, latter which isolated form [Cp*Ru(η6-toluene)][NHTs]. Mesylamido N,N′-ditosylethylenediamido analogous have also been synthesized.

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