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Zeolite‐Encapsulated Cobalt Salophen Complexes as Efficient Oxygen‐Activating Catalysts in Palladium‐Catalyzed Aerobic 1,4‐Oxidation of 1,3‐Dienes
Author(s) -
Wöltinger Jens,
Bäckvall JanE.,
Zsigmond Ágnes
Publication year - 1999
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/(sici)1521-3765(19990503)5:5<1460::aid-chem1460>3.0.co;2-i
Subject(s) - catalysis , cobalt , cyclohexene , palladium , chemistry , zeolite , yield (engineering) , oxygen , inorganic chemistry , organic chemistry , materials science , metallurgy
Encapsulation of cobalt salophen catalysts such as 1 into the supercage of zeolite Y ( 1‐ZeY ) (shown schematically) provides a catalyst that when used in the Pd‐catalyzed aerobic oxidation of 1,3‐cyclohexadiene gave 1,4‐diacetoxy‐2‐cyclohexene in high yield at room temperature in three hours. 1‐ZeY can be isolated and reused several times with still good conversion in the third run.