Notes 5131948. Correlation of the ConJigurations of a-Methyl-p-alanine and Methylsuccinic AcidBy K. BALENOVIC and N. BREGANT CORRELATION of the configurations of (-)-a-methyl-P-alanine (I) and (-)-2-methylbutanol by way of (+)-2-methyl-l-phthalimidobutane, described previously,l indicated the (R)-configuration for this amino-acid.showed that the optical purity of the 2-methyl-l-phthalimidobutane obtained by Raney nickel desulphurisation of (+)-2-methyl-l-phthalimidobutan-3-one ethylene mercaptol depended strongly on the nature of the catalyst, and another method for establishing the configuration of (I) was therefore desirable.CHZNH, rR However, our later experiments

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