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Self-separating homogeneous copper(I) catalysts
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DOI：10.1021/ja0741372.png)
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摘要
En 中文
A heptane-soluble polyisobutylene (PIB)-Cu(I) catalyst was synthesized in a heptane/ethanol latent biphasic solvent system. The addition of water to this initially homogeneous solution produced a biphasic solvent system that separates the PIB-Cu(I) complex from the reaction mixture as a heptane solution. This heptane solution can be used in reactions such as click chemistry where the PIB-Cu(I) catalyst is again separated from the reaction mixture as a heptane solution with the products of the reaction mixture being separated in the ethanol phase of the latent biphasic solvent system. This PIB-Cu(I) complex can also be used in an atom transfer radical polymerization (ATRP) of polystyrene. Using the differential solubilities of PIB and polystyrene in heptane, a PIB-complexed Cu (I) species can be separated and recycled for multiple uses in further polymerization reactions with good control over molecular weight and molecular weight distribution.
Keyword:
TRANSFER RADICAL POLYMERIZATION
SUPPORTED CATALYST
CLICK CHEMISTRY
LIGANDS
SYSTEM
CYCLOADDITION
POLYMERS
FACILE
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期刊
IF:
15.6
论文数:
20.0W
被引数:
60.2W
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引用论文
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