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Cover Picture: Carbon Dioxide Hydrogenation and Formic Acid Dehydrogenation Catalyzed by Iridium Complexes Bearing Pyridyl‐pyrazole Ligands: Effect of an Electron‐donating Substituent on the Pyrazole Ring on the Catalytic Activity and Durability (Adv. Synth. Catal. 2/2019)
Author(s) -
Onishi Naoya,
Kanega Ryoichi,
Fujita Etsuko,
Himeda Yuichiro
Publication year - 2019
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.201801550
Subject(s) - chemistry , formic acid , pyrazole , iridium , catalysis , substituent , dehydrogenation , medicinal chemistry , photochemistry , ligand (biochemistry) , ring (chemistry) , rhodium , moiety , combinatorial chemistry , organic chemistry , biochemistry , receptor
The inside cover picture , provided by Naoya Onishi and co‐workers, illustrates CO 2 hydrogenation and formic acid dehydrogenation accelerated by an efficient iridium catalyst bearing a pyridyl‐pyrazole ligand in water. The novel catalyst can perform the CO 2 hydrogenation under mild conditions, and produce a large amount of gases (H 2 /CO 2 ) from formic acid in long‐term operation. It was revealed that, in both reactions, enhancement of the electron‐donating ability of the substituent on the pyrazole moiety was important for improving the catalytic activity. Details can be found in the communication on pages 290–297 (N. Onishi, R. Kanega, E. Fujita, Y. Himeda, Adv. Synth. Catal . 2019 , 361 , 290–297; DOI: 10.1002/adsc.201801323).