Insoluble Lignin Models (3): Preparation of a Polymer-Bound Guaiacylpropanol Model

Barkhau, Robert A.; Malcolm, Earl W.; Dimmel, Donald R.

doi:10.1080/02773819008050238

Cited by 4 publications

(2 citation statements)

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“…Connors et al (1977) attached lignin model compounds to polystyrene by ester bonds. Dimmel and his co-workers used ether bonds for this purpose (Apfeld et al 1988; Barkhau et al 1990 (Hodge and Waterhouse 1981). In this work we demonstrate the usefulness of this reaction äs a way to attach lignin model compounds to chloromethylated polystyrene.…”

Section: Introductionmentioning

confidence: 93%

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Synthesis of Polymer Supported Lignin Model Compounds. Part 2. Use of the Wittig reaction in Attaching of Aldehyde Group Containing Lignin Model Compounds to Polystyrene

Kilpeläinen¹,

Brunow²

1994

HFSG

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KeywondsLignin model compounds Polymer support ß-Aryl ether Wittig reaction Functional polymer Aldehyde 13 C NMR SummaryThe Wittig reaction was used to synthesise polymer supported lignin model compounds. In the syntheses, lignin model compounds containing an aldehyde group were attached to chloromethylated polystyrene. The chemical structure of the lignin model compounds bound to the polymers were confirmed with 13 C NMR spectroscopy. IntroductionSynthetic lignin model compounds which mimic specific structural units of lignin macromolecules have proven to be of great importance in attempt to understand the chemistry and reactions of lignin. The interest to synthesise larger, more "lignin like" model compounds has led to synthesis of trimeric, tetrameric and hexameric lignin model compounds (Ralph et al. 1986;Hyatt 1987;Kilpeläinen et al. 1994b). The synthesis of molecules of this size has, however, some limitations. It is quite time consuming and the yields of target compounds become small because of the long synthesis routes needed. Another approach to increase the size of model compounds is to attach small lignin model compounds to polymers. Connors et al. (1977) attached lignin model compounds to polystyrene by ester bonds. Dimmel and his co-workers used ether bonds for this purpose (Apfeld et al. 1988;Barkhau et al. 1990).

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Section: Introductionmentioning

confidence: 93%

“…Connors et al (1977) attached lignin model compounds to polystyrene by ester bonds. Dimmel and his co-workers used ether bonds for this purpose (Apfeld et al 1988;Barkhau et al 1990). …”

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confidence: 97%