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- W2944019623 abstract "Abstract The β-shielded acrylamide N,N-diisopropyl-α-(1,1,3,3-tetramethylindan-2-ylidene)acet-amide was prepared through ketone addition of an α-lithiated acetamide, followed by H2O elimination. Its α-deprotonation by n-butyllithium occurred readily in THF without any tendency towards addition reactions at C=O or C-β. The resultant single crystals of a dimeric lithio derivative had triple Li–O coordination and a weakly bonding, ion-pair type Li–C(α) relationship. In tert-butyl methyl ether as the solvent, up to seven pairs of diastereotopic nuclei (both 1H and 13C) established a CS-symmetric lithium 1-aminoallen-1-olate structure that is ascribed to either a thermal ground state or a very rapid (on the NMR time scales) oscillation between two chiral ground states that may resemble the solid-state structure." @default.
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- W2944019623 date "2019-08-01" @default.
- W2944019623 modified "2023-09-27" @default.
- W2944019623 title "α-Deprotonation of a β-shielded acrylamide creates a distorted lithium 1-aminoallen-1-olate" @default.
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- W2944019623 doi "https://doi.org/10.1016/j.jorganchem.2019.04.031" @default.
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