Abstract
Abstract The hydrogenation of 3-methyl-fumaric and maleic ester mono aldehydes protected as oxazolidines of nor-ephedrine (NEPH) derivation has been studied. This transformation takes place with moderate to good π-face stereodifferentiation and allows the preparation of non-racemic 3-methyl-succinaldehydic acid methyl ester (I RMe). The factors dictating the diastereocontrol are discussed.
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