caa a22 4500 46795416X CHVBK 20180405193745.0 cr unu---uuuuu 170328e20050101xx s 000 0 eng 10.1007/s10975-005-0051-6 doi (NATIONALLICENCE)springer-10.1007/s10975-005-0051-6 (NATIONALLICENCE)springer-10.1007/PL00021990 Catalyst activity in alkylthiophene dealkylation [Elektronische Daten] [A. Mashkina, V. Chernov] The transformations of 2-alkylthiophenes on various catalysts were studied. In the presence of oxide and sulfide catalysts, 2-methylthiophenes and 2-isopropylthiophenes underwent dealkylation to thiophene. The reaction was complicated by isomerization to 3-alkylthiophene and cracking. The dealkylation of 2-ethylthiophene occurred only in the presence of oxide catalysts. Side-chain dehydrogenation resulting in the formation of 2-vinylthiophene primarily occurred under the action of sulfide and some oxide catalysts. Acid catalysts (amorphous aluminosilicate and zeolites in the form of hydrogen) were the most active and selective in the dealkylation of 2-alkylthiophenes. It is believed that the dealkylation reaction of 2-alkylthiophenes on these catalysts occurs by means of a protolytic mechanism. MAIK "Nauka/Interperiodica”, 2005 Mashkina A. Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk, Russia aut Chernov V. Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk, Russia aut Kinetics and Catalysis Nauka/Interperiodica 46/1(2005-01-01), 88-95 0023-1584 46:1<88 2005 46 10975 https://doi.org/10.1007/s10975-005-0051-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10975-005-0051-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mashkina A. Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk, Russia aut NATIONALLICENCE 700 1- Chernov V. Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk, Russia aut NATIONALLICENCE 773 0- Kinetics and Catalysis Nauka/Interperiodica 46/1(2005-01-01), 88-95 0023-1584 46:1<88 2005 46 10975 NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00021990 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer