D-Tartaric acid → L-Malic Acid

Beteiligte Stoffe

Reaktionsschritte

One of the intermediates, (S)-1-methyl-3-pyrrolidinol, was synthetized with retention of optical purity as shown in Chart IX starting with (S)-malic acid. The (S)-1-methyl-3-pyrrolidinol was shown to be dextrorotatory. As an alternative method of obtaining the resolved isomers of 1-methyl-3-pyrrolidinol, the racemic mixture was treated with (2S,3S)-tartaric acid in methanol. The resulting crystals, after one recrystallization, were converted to the base. This base was the dextrorotatory (S)-1-methyl-3-pyrrolidinol identical to that produced from (S)-malic acid.

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