Abstract Methyl-1-naphthylphenylstannyltetracarbonyl (diphenyl-N-methyl-N-(S)-1- phenylethylaminophosphine) manganese (I) has been prepared by two different routes from racemic methyl-1-naphthylphenyltin chloride. Fractional recrystallizations yielded two diastereomeric fractions with fx205-1=+ 40.3 and—71.4, respectively, which have identical NMR and IR spectra.
