Synthesis 1986; 1986(5): 418-419
DOI: 10.1055/s-1986-31660
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Synthesis of Methyl (Z)-2-Acetamido-3-aryl-2-butenoates in Two Highly Selective Steps

C. Cativiela* , M. D. Diaz De Villegas, E. Meléndez
  • *Department of Organic Chemistry, University of Zaragoza. Zaragoza, Spain
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Publikationsdatum:
27. September 2002 (online)

Diazomethane reacts with methyl (Z)-2-acetamido-3-aryl-2-propenoates regio- and stereospecifically to afford cis-4-aryl-3-acetamido-3-methoxycarbonyl-Δ1-pyrazolines which heated in 1,2-ethanediol at 200°C extrude nitrogen to afford stereospecifically methyl (Z)-2-acetamido-3-aryl-2-butenoates in high yields.

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