- Synthesis of a series of iridium complexes bearing substituted 2-pyridonates and their catalytic performance for acceptorless dehydrogenation of alcohols under neutral conditions
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A series of Cp*Ir complexes bearing 5- and 4,5-substituted 2-pyridonate ligands have been synthesized and their catalytic performance for acceptorless dehydrogenation of alcohols has been investigated under neutral conditions. Electron-withdrawing groups such as methoxycarbonyl, trifluoromethyl, cyano, and nitro groups at the 5-position promoted the acceptorless dehydrogenation of 1-phenylethanol, whereas electron-donating methyl group at the 5-position retarded the reaction. Furthermore, introduction of methyl group at the 4-position improved the catalytic performance. Thus, Cp*Ir(5-trifluoromethyl-4-methyl-2-pyridonate)Cl (2bc) exhibited the highest catalytic performance among the complexes examined, and also showed good catalytic performance for acceptorless dehydrogenation of primary alcohols.
- Yamaguchi, Ryohei,Kobayashi, Daiki,Shimizu, Mineyuki,Fujita, Ken-ichi
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- Small molecule antagonist of leukocyte function associated antigen-1 (LFA-1): Structure-activity relationships leading to the identification of 6-((5 S,9 R)-9-(4-Cyanophenyl)-3-(3,5-dichlorophenyl)-1-methyl-2,4-dioxo-1,3,7- triazaspiro[4.4]nonan-7-yl)nico
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Leukocyte function-associated antigen-1 (LFA-1), also known as CD11a/CD18 or αLβ2, belongs to the β2 integrin subfamily and is constitutively expressed on all leukocytes. The major ligands of LFA-1 include three intercellu
- Watterson, Scott H.,Xiao, Zili,Dodd, Dharmpal S.,Tortolani, David R.,Vaccaro, Wayne,Potin, Dominique,Launay, Michele,Stetsko, Dawn K.,Skala, Stacey,Davis, Patric M.,Lee, Deborah,Yang, Xiaoxia,McIntyre, Kim W.,Balimane, Praveen,Patel, Karishma,Yang, Zheng,Marathe, Punit,Kadiyala, Pathanjali,Tebben, Andrew J.,Sheriff, Steven,Chang, Chiehying Y.,Ziemba, Theresa,Zhang, Huiping,Chen, Bang-Chi,Delmonte, Albert J.,Aranibar, Nelly,McKinnon, Murray,Barrish, Joel C.,Suchard, Suzanne J.,Murali Dhar
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experimental part
p. 3814 - 3830
(2010/07/05)
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