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Novel Nickel(II) Complexes for the Catalytic Copolymerization of Ethylene and Carbon Monoxide: Polyketone Synthesis in Supercritical Carbon Dioxide

✍ Scribed by Wolfgang Kläui; Jochen Bongards; Guido J. Reiß

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
97 KB
Volume
39
Category
Article
ISSN
0044-8249

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✦ Synopsis

Kohlenforschung at Mülheim an der Ruhr for their kind support and their help in performing the reactions in supercritical carbon dioxide.

Preparation for the synthesis of polyketones in scCO 2 : Compound 4 e (5.5 mg, 0.006 mmol) was transferred to a 20-mL autoclave under N 2 . The solution was pressurized with ethylene (2.0 g; 40 bar), carbon monoxide (0.4 g; 10 bar) and carbon dioxide (15.6 g), heated to 70 8C, and stirred overnight. The resulting white solid was washed with methanol and dried. Yield: 0.78; m.p. 255 ± 262 8C; IR (KBr): n Ä 1692 cm À1 (CO); elemental analysis (%): calcd for (C 3 H 4 O) n : C 64.3, H 7.2; found: C 64.4, H 7.1.

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