Abstract
The new PN ligands 5, 6 and 7 were prepared by Schiff base condensation of 2-formylphenyl(diphenyl)phosphine ( 1) with the optically active amines ( R)-(−)-2-aminobutanol ( 2), ( S)-(+)-2-aminobutanol ( 3) and (1 S,2 S)-2-amino- 1-phenyl-1,3-propanediol ( 4). These new ligands were used in the Pd catalysed allylation of 1,5-dimethylbarbituric acid with allylacetate. 5-Allyl-1,5-dimethylbarbituric acid was obtained with an optical induction of up to 12.7% ee.
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