Author
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LU, FACHUANG - UNIV OF WISCONSIN-MADISON |
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Ralph, John |
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Submitted to: American Chemical Society Abstracts
Publication Type: Abstract Only Publication Acceptance Date: 3/28/1996 Publication Date: N/A Citation: N/A Interpretive Summary: Technical Abstract: Analytical thioacidolysis has become a well developed analytical technique for lignins that offers somewhat more detailed information than other degradative methods. It utilizes conditions that quite selectively cleave ether linkages while minimizing re-condensations and side reactions. But thioacidolysis has significant drawbacks, not the least of which is the foul stench of the required reagents. We have recently developed significantly better methods for cleaving ether units in lignin essentially quantitatively, using mild conditions and simple non-malodorous reagents. This paper details the reaction conditions required to obtain similar data to the one-step analytical thioacidolysis procedure. The relative simplicity of the analytical method, the significantly greater selectivity of the ether cleavage reactions, and the absence of side-reactions are all substantial advantages. The methodology allows thioacidolysis-type data to be obtained relatively easily by researchers without subjecting their building to the pleasures of ethane thiol. |