Routes are described for the synthesis of 3-alkyl-3-(prop-2-ynyl)pyrrolidine-2,5-diones 5 and 6, which are not available by the literature method for the corresponding prop-2-enyl analogues, and 3-carboxy-3-(prop-2-ynyl)pyrrolidine-2,5-dione 7.
L. W. L. Woo, H. J. Smith, K. J. Barrell and P. J. Nicholls, J. Chem. Soc., Perkin Trans. 1, 1993, 2549 DOI: 10.1039/P19930002549
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