Osmium(II)-Induced Rearrangement of Allenols for Metallafuran Complexes
收藏NIAID Data Ecosystem2026-03-13 收录
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https://figshare.com/articles/dataset/Osmium_II_-Induced_Rearrangement_of_Allenols_for_Metallafuran_Complexes/20448325
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资源简介：
Osmafuran complexes in the form of cis-[Os(L∧L)2(C∧O)]+ (L∧L
= 1,1-bis(diphenylphosphino)methane
(dppm) or 2,2′-bipyridine (bpy); C∧O = [C(CH3)C(CH3)CRO]−, coordinating atoms in italics) were prepared from reactions between
dichloro-Os(II) complexes cis-[Os(L∧L)2Cl2] and allenols H2CCC(CH3)(CH(R)(OH)) in alcoholic solvents. Rearrangement of allenolates
H2CCC(CH3)(CH(R)(O–)) involving deprotonation of the secondary alcoholic carbon and
protonation of the terminal allenic carbon was evident from the X-ray
crystal structures of the resulting complexes. Density functional
theory (DFT) calculations suggested a rearrangement mechanism involving
Os–alkene intermediates cis-[Os(L∧L)2(H2CCH–C(CH3)(C(R)(O–)))]+ but not Os–hydride intermediates.
Overall, these osmafurans are not directly derived from common metal–allene
reaction patterns.
创建时间：
2022-08-08
