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Dialkylammonium tert-Butylmethylphosphinites: Stable Intermediates for the Synthesis of P-Stereogenic Ligands

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The preparation of shelf-stable crystalline salts of tert-butylmethylphosphinous acid borane 1 is described. X-ray analysis of diisopropylammonium tert-butylmethylphosphinite borane 4 revealed the existence of a cyclic hydrogen-bond network in the solid state which accounts for the increased melting point and stability. Dialkylammonium phosphinite boranes are convenient precursors of the chiral tert-butylmethylphosphine fragment. Compound 4 can be directly employed in SN2@P reactions with different nucleophiles to yield valuable P-stereogenic intermediates and ligands.

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SALOMÓ I PRAT, Ernest, PRADES, Amparo, RIERA I ESCALÉ, Antoni, VERDAGUER I ESPAULELLA, Xavier. Dialkylammonium tert-Butylmethylphosphinites: Stable Intermediates for the Synthesis of P-Stereogenic Ligands. _Journal of Organic Chemistry_. 2017. [consulta: 28 de gener de 2026]. ISSN: 0022-3263. [Disponible a: https://hdl.handle.net/2445/114291]

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