An Efficient Synthesis of 2,3-Diaminoacid Derivatives Using Phosphine Catalyst

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Ethyl 2,3-diphthalimidoylpropanoate was effectively synthesized from ethyl propynoate with two equivalents of phthalimide catalyzed by triphenylphosphine in good yield. The choice of reaction media was important for selective synthesis of the desired 2,3-
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