期刊
CATALYSIS COMMUNICATIONS
卷 119, 期 -, 页码 16-21出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2018.10.010
关键词
Palladium; Acetylacetonate; Phosphines; Polymerization; Phenylacetylene; tris(2-methoxyphenyl)phosphine
资金
- Government Assignment for Scientific Research from the Ministry of Education and Science of the Russian Federation [4.5183.2017/8.9]
- Ministry of Education and Science of the Russian Federation [231]
- RFBR [31 16-33-60115\15 mol_a_dk]
A series of cationic acetylacetonate palladium complexes were demonstrated to be active for the polymerization and oligomerization of phenylacetylene. Catalyst screening and optimization have determined the superior activity of complex [(acac)Pd(TOMPP)(2)]BF4 (TOMPP - tris(2-methoxyphenyl)phosphine) for the stereospecific polymerization of phenylacetylene in non-coordinating solvents as well as in an aqueous emulsion. Catalyst turnover frequencies of 100-160 h(-1) were observed (M-w = (10-27).10(4) with PDI = 1.7-2.3, cis double bond content in PPA up to 95%). The effect of temperature, solvent nature, and the use of cocatalyst, BF3 center dot OEt2, have been studied.
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