Polymerization of Isomeric N-(4-substituted benzylidene)-4-ethynylanilines and 4-substituted N-(4-ethynylbenzylidene)anilines by Transition Metal Catalysts. Preparation and Characterization of New Substituted Polyacetylenes with Aromatic Schiff Base Type

0181171 - UFCH-W 20010082 RIV GB eng J - Journal Article
Balcar, Hynek - Sedláček, J. - Zedník, J. - Blechta, Vratislav - Kubát, Pavel - Vohlídal, J.
Polymerization of Isomeric N-(4-substituted benzylidene)-4-ethynylanilines and 4-substituted N-(4-ethynylbenzylidene)anilines by Transition Metal Catalysts. Preparation and Characterization of New Substituted Polyacetylenes with Aromatic Schiff Base Type.
Polymer. Roč. 42, č. 16 (2001), s. 6709-6721. ISSN 0032-3861. E-ISSN 1873-2291
R&D Projects: GA ČR GA203/98/1165
Institutional research plan: CEZ:AV0Z4040901
Keywords : substituted polyacetylenes * ethynylated aromatic Schiff bases polymerization * transition metal catalysts
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.681, year: 2001

Ethynylated aromatic Schiff bases R-C6H4-CH=N-C6H4-CđCH and R-C6H4-N=CH-C6H4-CđCH (R=Me, t-Bu, F, Br, CN, NO2, Me2N and -CđC-SiMe3) were polymerized using (i) [Rh(cod)OCH3]2, [(cod)=.eta. 4 -cyclooctadiene], (ii) Mo (=CHCPhMe2)(=N-C6H3-iPr2-2,6)[O-CMe(CF3)2]2, (iii) PdCl2 providing polyacetylenes with Schiff base type pendant groups. Depending on catalysts, molecular weight of polymers, the main chain cis double bond content and microstructure uniformity were found to decrease in the series Rh > Mo > Pd.
Permanent Link: http://hdl.handle.net/11104/0001868