Blum, Jochanan published the artcileKinetic resolution of racemic 2,2′-bis(trifluoromethane-sulfonyloxy)-1,1′-binaphthalene by chiral dimethylaluminum complexes and an achiral Pd catalyst, as well as by achiral dimethylaluminum reagents in the presence of a chiral Pd catalyst, Recommanded Product: (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), the publication is Tetrahedron Letters (1998), 39(31), 5611-5614, database is CAplus.
Kinetic resolution of the racemic title binaphthalene was shown to take place during its methylation with either (Me2AlOCH2CH2OMe)2 or Me2Al(CH2)3NMe2 in the presence of an optically active Pd(binap) catalyst, as well as during its alkylation with either (S)-(+)-[Me2AlOCH2CH(Me)OCH2Ph]2 or (S)-(+)-[Me2AlOCH2CH(CH2CHMe2)NMe2]2 in the presence of an achiral palladium complex to give the Me trifluorosulfonyloxybinaphthalene. The ee values of the resolved binaphthyl derivatives by the two methods were up to 69 and 12%, resp. The latter method represents the first application of a stabilized dialkylaluminum complex with a chiral chelating ligand for asym. induction.
Tetrahedron Letters published new progress about 126613-06-7. 126613-06-7 belongs to esters-buliding-blocks, auxiliary class Chiral Diphenols, name is (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), and the molecular formula is C22H12F6O6S2, Recommanded Product: (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate).
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