Ukaji, Yutaka published the artcileAsymmetric bis(alkoxycarbonylation) reaction of homoallylic alcohols catalyzed by palladium in the presence of Cu(I) triflate using the chiral bioxazoline ligand, HPLC of Formula: 138429-17-1, the publication is Bulletin of the Chemical Society of Japan (1996), 69(3), 735-42, database is CAplus.
Palladium-catalyzed asym. intra- and intermol. bis(alkoxycarbonylation) reactions of homoallylic alcs. in the presence of copper(I) triflate were achieved by using the chiral bioxazoline ligand, (S,S)-4,4′-bis(phenylmethyl)-4,4′,5,5′-tetrahydro-2,2′-bioxazole, under normal pressure of carbon monoxide and oxygen at 25 °C to give the corresponding optically active γ-butyrolactones in 19-65% ee. For example, the allyl palladiumchloride dimer-catalyzed alkoxycarbonylation of 1-(2-propenyl)cyclohexanol (I) in the presence of trifluoromethanesulfonic acid copper(1+) salt (benzene solvate) and [S-(R*,R*)]-4,4′,5,5′-tetrahydro-4,4′-bis(phenylmethyl)-2,2-bioxazole in THF gave (S)-2-oxo-1-oxaspiro[4.5]decane-3-acetic acid Me ester (II) in 57% yield and in 65% enantiomeric excess.
Bulletin of the Chemical Society of Japan published new progress about 138429-17-1. 138429-17-1 belongs to oxazolidine, auxiliary class BOX Ligands, name is (4S,4’S)-4,4′-Diisobutyl-4,4′,5,5′-tetrahydro-2,2′-bioxazole, and the molecular formula is C4H6BrFO2, HPLC of Formula: 138429-17-1.
Referemce:
https://en.wikipedia.org/wiki/Oxazolidine,
Oxazolidine | C3H7NO – PubChem