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NMR and DFT Studies with a Doubly Labelled (15)N/(6)Li S‐Trifluoromethyl Sulfoximine Reveal Why a Directed ortho‐Lithiation Requires an Excess of n‐BuLi
This work shows why it is imperious to use an excess of butyllithium for a directed ortho‐lithiation of a trifluoromethyl sulfoximine. The analysis of mixtures of n‐BuLi and sulfoximine 1 in THF‐d(8) using {(1)H, (6)Li, (13)C, (15)N, (19)F} NMR experiments at low temperatures reveal that a first dep...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10108270/ https://www.ncbi.nlm.nih.gov/pubmed/36377763 http://dx.doi.org/10.1002/anie.202214106 |