## Abstract 1,3‐Butadiene, 4‐methyl‐1,3‐pentadiene and styrene were polymerized with dicyclopentadienyltitanium dichloride/methylaluminoxane (Cp~2~TiCl~2~/MAO) and dicyclopentadienyltitanium chloride/MAO (Cp~2~TiCl/MAO). These systems are less active than cyclopentadienyltitanium trichloride/MAO (C
Synthesis of Model Molecules and NMR Analysis of Polymeric Reagents Based on Propane-1,3-dithiol and 1,3-Dithiane Systems
✍ Scribed by Francesco Lucchesini; Vincenzo Bertini; Marco Pocci; Eugenio Micali; Angela De Munno
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 255 KB
- Volume
- 2002
- Category
- Article
- ISSN
- 1434-193X
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A convenient synthesis of the 1,3-dihydro-1,3,3-tris(perfluoroalkyl)isobenzofuran-1-ols 3a,b was elaborated starting from commercially available phthaloyl dichloride and trimethyl(perfluoroalkyl)silanes (Me 3 SiR f ) 1a,b (R f ¼ CF 3 , C 2 F 5 ) in the presence of a fluoride source (Schemes 1 and 3)
## Abstract Six new poly(amide‐imide)s **8a–f** containing trimethylene moiety in the main chain were synthesized by the polycondensation reactions of 1,3‐bis[4,4'‐(trimellitimido) phenoxy] propane **6** with six different aromatic diamines **7a–f** in a medium constituting __N__‐methyl‐2‐pyrrolido