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Enantioselective desymmetrization of diphenylphosphinamides via (−)-sparteine-mediated ortho-Lithiation. Synthesis of P-Chiral ligands

AuthorsPopovici, Cristinel; Oña-Burgos, Pascual; Fernández, Ignacio; Roces, Laura; García-Granda, Santiago ; Iglesias, María José; López Ortiz, Fernando
Issue Date2010
PublisherAmerican Chemical Society
CitationOrganic Letters 12(3): 428-431 (2010)
AbstractAsymmetric ortho-lithiation of N-dialkyl-P,P-diphenylphosphinamides using [n-BuLi·(−)-sparteine] is described as an efficient method for the synthesis of P-chiral ortho-functionalized derivatives in high yields and ee’s from 45 to >99%. The method allows access to new enantiomerically pure P-chiral phosphine and diimine ligands.
Publisher version (URL)http://dx.doi.org/10.1021/ol902545q
Appears in Collections:(CINN) Artículos
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