+++Perkin Transactions_1

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J. Chem. Soc., Perkin Trans. 1, 1990, 611 - 616,
Tetramic acid chemistry. Part 1. Reinvestigation of racemisation during the synthesis of tetramic acids via Dieckmann cyclisation
Joлl Poncet, Patrick Jouin, Bertrand Castro, Louisette Nicolas, Mohamed Boutar and Alain Gaudemer

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http://dx.doi.org/10.1039/P19900000611

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Спасибо, Андрей