Parallel kinetic resolution of racemic amines using 3-N,N-diacylaminoquinazolin-4(3H)-ones

The two pseudoenantiotopic N-acyl groups of enantiopure 3-[N-(3-m-acetoxyphenylpropanoyl)-N-(3-phenylpr opanoyl)amine]-2-isopropylquinazolin-4(3H)-one 7 each react with a different enantiomer of 2-methylpiperidine giving rise to efficient parallel kinetic resolution (ee > 95%).