[2+2]- and [4+2]-Cycloadditions of Arylazoalkenes to Diphenylketene

Authors

  • Dr. Sven Sommer

    Corresponding author
    1. Organisch-chemisches Institut der Technischen Universität, Arcisstrasse 21, D-8000 München 2 (Germany)
    • Organisch-chemisches Institut der Technischen Universität, Arcisstrasse 21, D-8000 München 2 (Germany)
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  • Reactions with Azo Compounds, Part 3.—Part 2: S. Sommer, Tetrahedron Lett., in press.

Abstract

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N-Vinyl-1,2-diazetidinones(3) have been synthesized for the first time. In contrast to the very unreactive (E)-azobenzenes, (E)-arylazoalkenes (1) readily react with diphenylketene (2) to give (3) and/or pyridazinones (4).

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