Soda-amine pulping : reaction of amines with free phenolic [beta]-[omicron]-4 ethers

John R. Obst

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Soda-amine pulping : reaction of amines with free phenolic [beta]-[omicron]-4 ethers

Informally Refereed

Authors:

John R. Obst

Year:

1981

Type:

Miscellaneous Publication

Station:

Forest Products Laboratory

Source:

Tappi. Vol. 64, no. 10 (Oct. 1981): pages 99-102.

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Abstract

The quinone methide from guaiacylglycol-ß-guaiacyl ether underwent nucleophilic addition to the a-carbon with primary and secondary amines at 40°C. At pulping temperature, 170°C, only the primary amine adduct was detected. The quinone methide from guaiacylglycerol-ß-guaiacyl ether gave analogous adducts at 40°C, but no quinone methide-amine adducts were detected at 170°C. Instead, the major products were the vinyl ether and a substituted vinyl ether which resulted from a Mannich reaction of the vinylether, amine, and liberated formaldehyde.

Keywords

Amines, pulping, alkaline pulping, quinones, formaldehyde, delignification, condensation, ethers, lignin, Lignin model compounds, Mannich reaction

Citation

Obst, John R. 1981. Soda-amine pulping : reaction of amines with free phenolic [beta]-[omicron]-4 ethers. Tappi. Vol. 64, no. 10 (Oct. 1981): pages 99-102.