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Effect of the structure of coal-related model ethers on the rate and mechanism of their thermolysis: 1. Effect of the number of methylene groups in the R (CH2)nO(CH2)mR structure

✍ Scribed by Vjacheslav Yu. Korobkov; Evgenija N. Grigorieva; Victor I. Bykov; Oleg V. Senko; Igor V. Kalechitz

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
627 KB
Volume
67
Category
Article
ISSN
0016-2361

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✦ Synopsis

The constants of thermolysis rate of C,H,~(CH,),~O~(CH,),-C6HS ethers were measured in conditions close to those of coal liquefaction (hydrogen pressure of 8.5 MPa; temperature up to 410°C) but minimizing secondary conversions (i.e. in ten-fold excess of tetralin). The ethers form the following reactivity series depending on n and m values:

e mechanism and pathways of ether conversions were defined based on the changing concentrations of the intermediate and final reaction products. In the case of benzyl phenyl and dibenzyl ethers the thermolysis was accompanied by intramolecular rearrangements.

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