Reference of 1034-39-5. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 1034-39-5, Name is Dibromotriphenylphosphorane. In a document type is Article, introducing its new discovery.
2,2′-BIS(DIPHENYLPHOSPHINO)-1,1′-BINAPHTHYL (BINAP). A NEW ATROPISOMERIC BIS(TRIARYL)PHOSPHINE. SYNTHESIS AND ITS USE IN THE Rh(I)-CATALYZED ASYMMETRIC HYDROGENATION OF alpha-(ACYLAMINO)ACRYLIC ACIDS
Racemic 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl has been synthesized from 2,2′-dihydroxy-1,1′-binaphthyl in two steps and resolved into optically pure (R)-(+) and (S)-(-) enantiomers by the use of (+)-di-mu-chlorobis<(S)-N,N-dimethyl-alpha-phenylethylamine-2C,N> dipalladium.This new axially dissymmetric bis(triaryl)phosphine serves as an excellent ligand for Rh(I)-catalyzed asymmetric hydrogenations of alpha-(acylamino)acrylic acids or esters.Factors controlling the enantioselectivity and mechanistic aspects are discussed on the basis of the 31P-NMR measurements.
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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate