Dialkylammonium tert-Butylmethylphosphinites: Stable Intermediates for the Synthesis of P-Stereogenic Ligands
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...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/114291 |
| Acceso en línea: | https://hdl.handle.net/2445/114291 |
| Access Level: | acceso abierto |
| Palabra clave: | Lligands (Bioquímica) Compostos fosforosos Catàlisi asimètrica Ligands (Biochemistry) Phosphorus compounds Enantioselective catalysis |
| Sumario: | 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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