"Synthesis and Ring-Opening Metathesis Polymerization Of 8-Membered Unsaturated Lactams and Related Monomers"

Janusz Baran, Irena Bogdanska, Dominique Jan, Lionel Delaude, Albert Demonceau, and Alfred F. Noels

journal cover
          source: Journal of Molecular Catalysis A: Chemical
            year: 2002
          volume: 190
      first page: 109
       last page: 116
             doi: 10.1016/S1381-1169(02)00222-4

graphical abstract

Abstract: Novel 8-membered ring unsaturated lactams were synthesized and tested as monomers for the ruthenium-catalyzed ring-opening metathesis polymerization (ROMP). The reaction of a N-protected cyclic alkeneamine was also investigated. The Grubbs' benzylidene complexes RuCl2(=CHPh)(PCy3)2 or RuCl2(=CHPh)(PCy3)(IMesH2) and selected ruthenium-arene species bearing either phosphine or stable Arduengo-type N-heterocyclic carbene ligands served as catalyst precursors. In most cases, isomerization of the starting materials took place and only 1-benzyl-1-aza-2-ketocyclooct-5-ene afforded a polymeric product. This polyamide was characterized by numerous analytical techniques.

Keywords: Ruthenium, Nylon, Carbene

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