Catalytic Transformations of Alkylthiophenes Full article
Journal |
Petroleum Chemistry
ISSN: 0965-5441 , E-ISSN: 1531-8532 |
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Output data | Year: 2005, Volume: 45, Number: 3, Pages: 209-215 Pages count : 7 | ||
Tags | Amorphous materials; Catalysis; Crude petroleum; Isomerization; Substitution reactions; Sulfur compounds; Zeolites | ||
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Abstract:
The transformations of alkylthiophenes in the presence of amorphous aluminosilicate and decationated zeolite HNaY were studied. Substituted thiophenes with R = 2- and 3-Me, 2-Et, and 2-iso-Pr undergo dealkylation to thiophene with close rates, migration of the alkyl group from the alpha- to the beta-position of the thiophene ring (or in the opposite direction with an elevated rate), and decomposition with H2S elimination. The dealkylation rate of 2-substituted thiophenes with a branched-chain radical (R = iso-Pr, tert-Bu) is much higher and the elimination rate with this radical is lower than those for normal-chain radicals; the isomerization step is virtually absent. Di-, tri-, and tetrasubstituted thiophenes with R = Et and iso-Pr undergo stepwise dealkylation, which is facilitated by an increase in the degree of substitution on the thiophene ring. Thiophene and its lower homologues can be obtained by the transformation of a mixture of high-molecular thiophenes.
Cite:
Mashkina A.V.
, Chernov V.I.
Catalytic Transformations of Alkylthiophenes
Petroleum Chemistry. 2005. V.45. N3. P.209-215. WOS Scopus РИНЦ
Catalytic Transformations of Alkylthiophenes
Petroleum Chemistry. 2005. V.45. N3. P.209-215. WOS Scopus РИНЦ
Original:
Машкина А.В.
, Чернов В.И.
Каталитические превращения алкилтиофенов
Нефтехимия. 2005. Т.45. №3. С.232-238. RSCI Scopus РИНЦ
Каталитические превращения алкилтиофенов
Нефтехимия. 2005. Т.45. №3. С.232-238. RSCI Scopus РИНЦ
Dates:
Published print: | May 1, 2005 |
Identifiers:
Web of science | WOS:000229629000009 |
Scopus | 2-s2.0-20544452356 |
Elibrary | 13497371 |
Citing:
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