Iridium catalyzed reversible dehydrogenation – Hydrogenation of quinoline derivatives under mild conditions
نویسندگان
چکیده
منابع مشابه
The iridium-catalyzed decarbonylation of aldehydes under mild conditions.
The catalytic decarbonylation of aldehydes has been developed using commercially available [IrCl(cod)](2) and PPh(3) under mild conditions, and the method could be widely applicable to various substrates with different functionalities.
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The first highly enantioselective iridium-catalyzed hydrogenation of cyclic enamines has been developed. This new reaction provided an efficient method for the synthesis of optically active cyclic tertiary amines including natural product crispine A.
متن کاملAir-stable and phosphine-free iridium catalysts for highly enantioselective hydrogenation of quinoline derivatives.
Enantioselective hydrogenation of quinoline derivatives catalyzed by phosphine-free chiral cationic Cp*Ir(OTf)(CF 3TsDPEN) complex (CF 3TsDPEN = N-(p-trifluoromethylbenzenesulfonyl)-1,2-diphenylethylene-diamine) afforded the 1,2,3,4-tetrahydroquinoline derivatives in up to 99% ee. The reaction could be carried out with a substrate-to-catalyst molar ratio as high as 1000 in undegassed methanol a...
متن کاملHighly efficient synthesis of aldenamines from carboxamides by iridium-catalyzed silane-reduction/dehydration under mild conditions.
The combination of IrCl(CO)(PPh3)2 with 1,1,3,3-tetramethyldisiloxane or poly(methylhydrosiloxane) (PMHS) is found to be an efficient catalyst system for the preparation of aldenamines from carboxamides; in particular, facile removal of silicone and iridium residues from the product can be achieved by the use of PMHS.
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Natural mesolite type zeolite was collected, modified by sulfuric acid treatment and characterized by using Powder-X ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR).Temperature programmed ammonia desorption (NH3-TPD), Brunauer-Emmer-Teller (BET) surface area analysis. Modified dealuminat...
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ژورنال
عنوان ژورنال: Journal of Organometallic Chemistry
سال: 2015
ISSN: 0022-328X
DOI: 10.1016/j.jorganchem.2015.04.015