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Synthesis 1994; 1994(8): 782-784
DOI: 10.1055/s-1994-25572
short paper
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N-tert-Butyl-N-(2,2-dichlorovinyl)carbamoyl Chloride: A Novel Building Block for the Synthesis of Nitrogen Heterocycles

Mikhail S. Novikov* , Alexander F. Khlebnikov, Alexander A. Stepanov, Rafael R. Kostikov
  • *Department of Chemistry, St. Petersburg State University, Universitetskii pr. 2, Petrodvorez, 198904 St. Petersburg, Russia
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Publication Date:
17 September 2002 (online)

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A synthesis of substituted 1,2,4-triazolidinones starting from N-tert-butyl-N-(2,2-dichlorovinyl)carbamoyl chloride (1) and hydrazine derivatives is reported. The reactions of 1 with ethylene-, phenylene- and propylenediamines followed by cyclizations yield the substituted cyclic ureas 6b-d, which may be used in the synthesis of bridged structures.