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Synthesis of P,P′-Heterotopic Binaphthyldiphosphanes (BINAPP′) Devoid of C2 Symmetry from 2,2′-Binaphthol

✍ Scribed by Serafino Gladiali; Antonio Dore; Davide Fabbri; Serenella Medici; Giovanna Pirri; Sonia Pulacchini

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
262 KB
Volume
2000
Category
Article
ISSN
1434-193X

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✦ Synopsis

The introduction of two nonequivalent diarylphosphanyl substituents into the 2-and 2Ј-positions of 1,1Ј-binaphthalene has been successfully accomplished in four steps from 1,1Ј-binaphthalene-2,2Ј-diol (BINOL) through conversion into the ditriflate followed by sequential substitution of triflate groups mediated by palladium or nickel catalysts. The selective monosubstitution of the triflate has been achieved

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