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A novel synthetic equivalent of the synthon ⊕CH2CH(NH2)COOH is now accessible with the first preparation of the N-(arylmethylene) dehydroalanine ester 2. The reaction proceeds via the urethane 1, which can readily be obtained from the methyl ester of serine (R C6H5, 4-C6H5C6H4).
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Wulff et al. (1984) studied this question.
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