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Title:	Dialkylammonium tert-Butylmethylphosphinites: Stable Intermediates for the Synthesis of P-Stereogenic Ligands
Author:	Salomó, Ernest; Prades, Amparo; Riera i Escalé, Antoni; Verdaguer i Espaulella, Xavier
Abstract:	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.
Subject(s):	-Lligands (Bioquímica) -Compostos fosforosos -Catàlisi asimètrica -Ligands (Biochemistry) -Phosphorus compounds -Enantioselective catalysis
Rights:	(c) American Chemical Society, 2017
Document type:	Article Article - Accepted version
Published by:	American Chemical Society
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