Furuno, Hiroshi published the artcileHighly enantioselective homogeneous catalysis of chiral rare earth phosphates in the hetero-Diels-Alder reaction, HPLC of Formula: 297752-25-1, the publication is Tetrahedron Letters (2003), 44(32), 6129-6132, database is CAplus.
Three types of rare earth (RE) complexes [Re((R)-BNP)3] of (R)-1,1′-binaphthyl-2,2′-diylphosphates ((R)-BNP, 1; (R)-6,6′-xylyl-BNP, 2; (R)-H8-BNP, 3) were synthesized and used as chiral Lewis acid catalysts for the hetero-Diels-Alder reaction of carbonyl compounds with the Danishefsky’s diene under homogeneous conditions. The Y[(R)-H8-BNP]3 (3-Y)-catalyzed reaction of aromatic aldehydes and the Yb[(R)-BNP]3 (1-Yb)-catalyzed reaction of phenylglyoxylates afforded the corresponding cycloadducts with excellent optical purities (up to 99% ee) in high yields at room temperature The successful recycling uses of the scandium catalyst (3-Sc) are also described.
Tetrahedron Letters published new progress about 297752-25-1. 297752-25-1 belongs to chiral-phosphine-ligands, auxiliary class Chiral Phosphoric Acids, name is (R)-4-Hydroxy-8,9,10,11,12,13,14,15-octahydrodinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide, and the molecular formula is C20H21O4P, HPLC of Formula: 297752-25-1.
Referemce:
https://en.wikipedia.org/wiki/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