2772-46-5Relevant articles and documents
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Sarkanen,Dence
, p. 715,719 (1960)
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The kinetics of lignin reactions during chlorine dioxide bleaching. Part 1. Influence of pH and temperature on the reaction of 1-(3,4-dimethoxyphenyl)ethanol with chlorine dioxide in aqueous solution
Gunnarsson, N. Per-Ivar,Ljunggren, Sten C. Hj.
, p. 422 - 431 (2007/10/03)
Rate constants as well as the products formed from the reaction between chlorine dioxide and the non-phenolic lignin model compound 1-(3,4-dimethoxyphenyl)ethanol have been determined in the pH interval 3-8. Spectroscopic data for the substrate and some products are given. The pH of the reaction mixture has a large influence on both the rate constant and the product distribution. Under technical chlorine dioxide bleaching conditions (pH 3, 40°C and an ionic strength of 0.3 mol kg-1 ) the rate constant has been found to be 0.12(2) M-1 s-1, which corresponds to a half-life of approximately 7 min in 0.01 M solution. The influence of temperature [Ea = 29(7)kJ mol-1] on the rate of reaction of this lignin model is small. At acidic pH (35) a large variety of both oxidized (quinones, lactones and ketones) and chlorinated products are formed. Above pH 8, one oxidation product, 3,4-dimethoxyacetophenone, predominates. No chlorinated products are found at a high pH. The mechanisms of formation of all these products are discussed. Acta Chemica Scandinavica 1996.
Facile Synthesis of Chloro-substituted Aromatic Ethers by Use of Benzyltrimethylammonium Tetrachloroiodate
Kajigaeshi, Shoji,Shinmasu, Youichi,Fujisaki, Shizuo,Kakinami, Takaaki
, p. 415 - 418 (2007/10/02)
The reaction of aromatic ethers with a calculated amount of benzyltrimethylammonium tetrachloroiodate in acetic acid (or dichloromethane) under mild conditions gave, selectively, the objective chloro-substituted aromatic ethers in good yields.