Details

Autor(en) / Beteiligte

• Gao, Yafei
• Carta, Veronica
• Pink, Maren
• Smith, Jeremy M

Titel

Catalytic Carbodiimide Guanylation by a Nucleophilic, High Spin Iron(II) Imido Complex

Ist Teil von

• Journal of the American Chemical Society, 2021-04, Vol.143 (14), p.5324-5329

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Reduction of the three-coordinate iron­(III) imido [Ph2B­( t BuIm)2FeNDipp] (1) affords [Ph2B­( t BuIm)2­FeNDipp]­[K­(18-C-6)­THF2] (2), a rare example of a high-spin (S = 2) iron­(II) imido complex. Unusually for a late metal imido complex, the imido ligand in 2 has nucleophilic character, as demonstrated by the reaction with DippNH2, which establishes an equilibrium with the bis­(anilido) complex [Ph2B­( t BuIm)2­Fe­(NHDipp)2]­[K­(18-C-6)­THF2] (3). In an unusual transformation, formal insertion of i PrNCN i Pr into the FeN­(imido) bond yields the guanidinate [Ph2B­( t BuIm)2­Fe­( i PrN)2­CNDipp]­[K­(18-C-6)­THF2] (4). Reaction of 4 with excess DippNH2 provides 3, along with the guanidine ( i PrNH)2CNDipp. As suggested by these stoichiometric reactions, 2 is an efficient catalyst for the guanylation of carbodiimides, converting a wide range of aniline substrates under mild conditions.