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Aliphatic carboxylic acids and ketones from sapropelitic coals

✍ Scribed by Nikolay V. Bodoev; Yuri V. Rokosov; Valentin A. Koptyug


Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
448 KB
Volume
69
Category
Article
ISSN
0016-2361

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✦ Synopsis


Normal aliphatic carboxylic acids and ketones obtained from the extraction of Taimylyr (Lensky basin, USSR) or Matagan (Irkutsky basin, USSR) sapropelitic coal with water and sodium hydroxide at elevated pressure and temperatures from 400 to 450Β°C were investigated. The compositions of these compounds were studied by i.r. and n.m.r. spectroscopy, and combined g.c.-m.s.. The possible pathways of aliphatic carboxylic acids and ketones formation during the fossilization process are discussed.


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## Abstract A one‐step transformation of __Ξ³__‐ and __Ξ΄__‐(spiro)lactones into __Ξ³__,__Ξ΄__‐ and __Ξ΄__,__Ξ΅__‐unsaturated ketones in the presence of carboxylic acids in the vapor phase at 400Β° over a supported manganese catalyst is reported for the first time. The scope of this new transformation is