𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Copolymerization of carbon monoxide and norbornadiene with a palladium catalyst

✍ Scribed by Der-Jang Liaw; Jang-Shiang Tsai

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
186 KB
Volume
35
Category
Article
ISSN
0887-624X

No coin nor oath required. For personal study only.

✦ Synopsis

Carbon monoxide (CO) and norbornadiene (NBD) with Pd(CH 3 CN) 4 (BF 4 ) 2 were copolymerized under various conditions at 50ЊC. Elemental analysis, infrared spectra, UV, Raman, and NMR spectra showed that the copolymers contained both ketone and unsaturated ring structures. Bidentate nitrogen ligands and phosphorus ligands proved to be more effective at stabilizing catalytic activity than monodentate arsenic ligands or phosphorus ligands. Methanol, protic acid, and an oxidant served as the coinitiator and chain transfer agent, respectively. X-ray diffraction analysis showed the copolymer to be partially crystalline. Thermogravimetric analysis showed that the TG curve for the NBD/CO copolymer has two stages with two maxima peaks at 251 and 470ЊC. This phenomenon was probably due to increased instability of the copolymers as CO content is increased. Hydrogenation of norbornadiene/CO copolymer with LiAlH 4 and Pd/C in THF yields a hydroxyl-containing polymer and norbornene/CO copolymer, respectively.

πŸ“œ SIMILAR VOLUMES

Copolymerization of carbon monoxide and
Copolymerization of carbon monoxide and 4-vinylcyclohexene with a palladium catalyst
✍ Der-Jang Liaw; Jang-Shiang Tsai πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 187 KB πŸ‘ 1 views

In this work, carbon monoxide (CO) and 4-vinylcyclohexene (VCH) with [Pd(CH 3 CN) 4 ](BF 4 ) 2 were copolymerized under various conditions at 60ЊC. Elemental analysis and infrared, UV, and NMR spectra indicated that copolymers containing a ketone and a cyclic structure of cyclohexyl and norbornane g

Copolymerization of carbon monoxide and
Copolymerization of carbon monoxide and norbornene derivatives with ester groups by palladium catalyst
✍ Der-Jang Liaw; Jang-Shiang Tsai; Hui-Chuan Sang πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 144 KB πŸ‘ 2 views

In this article we will discuss the synthesis of the new copolymers of norbornene derivatives with an ester group and carbon monoxide, using Pd(CH 3 CN) 4 (BF 4 ) 2 as a catalyst and 2,2 -bipyridine as a ligand in nitromethane/methanol at 60ЊC. Elementary analysis, infrared spectra, and NMR spectra

Alternating copolymerizations of styrene
Alternating copolymerizations of styrene derivatives and carbon monoxide in the presence of a palladium (II) catalyst
✍ Yakai Feng; Jingwu Sun; Yinbang Zhu; Weiyu Chen πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 199 KB πŸ‘ 2 views

A series of styrene derivatives were synthesized from aromatic substances by Friedel-Crafts acylation, reduction, and dehydration. Alternating copolymers of styrene derivatives and carbon monoxide were prepared in the presence of a palladium(II) catalyst. The characterization of the polyketones prod