6946-05-0Relevant articles and documents
One-Pot Synthesis of Primary and Secondary Aliphatic Amines via Mild and Selective sp3 C?H Imination
Comito, Robert J.,Ghosh, Subrata K.,Hu, Mengnan
supporting information, p. 17601 - 17608 (2021/11/03)
The direct replacement of sp3 C?H bonds with simple amine units (?NH2) remains synthetically challenging, although primary aliphatic amines are ubiquitous in medicinal chemistry and natural product synthesis. We report a mild and selective protocol for preparing primary and secondary aliphatic amines in a single pot, based on intermolecular sp3 C?H imination. The first C?H imination of diverse alkanes, this method shows useful site-selectivity within substrates bearing multiple sp3 C?H bonds. Furthermore, this reaction tolerates polar functional groups relevant for complex molecule synthesis, highlighted in the synthesis of amine pharmaceuticals and amination of natural products. We characterize a unique C?H imination mechanism based on radical rebound to an iminyl radical, supported by kinetic isotope effects, stereoablation, resubmission, and computational modeling. This work constitutes a selective method for complex amine synthesis and a new mechanistic platform for C?H amination.
6-SUBSTITUTED- 2,3,4,5-TETRAHYDRO-1H-BENZO[D]AZEPINES AS 5-HT2C RECEPTOR AGONISTS
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Page/Page column 70-71, (2008/06/13)
The present invention provides 6-substituted 2,3,4,5-tetrahydro-lH- benzo[d]azepines of Formula (I) as selective 5-HT2C receptor agonists for the treatment of 5-HT2c associated disorders including obesity, obsessive/compulsive disorder, depression, and anxiety: R6 D R? N-R" R* where R6 is -(CrC3)alkyl-S-(C0-C3)alkyl-R10, -(C1-C3)alkyl-NR11R12, -(CrC3)alkyl-O- R 13. and other substituents are as defined in the specification.
Electrolytic Oxidation of Ketones in Ammoniacal Methanol in the Presence of Catalytic Amounts of KI
Chiba, Toshiro,Sakagami, Hirotoshi,Murata, Miki,Okimoto, Mitsuhiro
, p. 6764 - 6770 (2007/10/03)
The indirect electrooxidation of ketones in ammoniacal methanol using iodide ion as a mediator afforded 2,2-dialkyl-2,5-dihydro-1H-imidazoles 3 via an oxidative cyclocoupling of ketimine intermediates formed from ketones and ammonia.The treatment of 3 with dilute HCl gave α-amino ketone hydrochlorides 4 and the parent ketones in good yields.A similar electrooxidation of 3 resulted in the formation of the corresponding 2H-imidazoles 6, which were hydrolyzed to α-diketones and the parent ketones.The same products 6 could also conveniently be obtained by chemical oxidation of 3 with aqueous NaOCl.
SYNTHESIS OF α-AMINO KETONE HYDROCHLORIDES VIA CHEMOSELECTIVE HYDROGENATION OF α-NITRO KETONES
Tamura, Rui,Oda, Daihei,Kurokawa, Hiroshi
, p. 5759 - 5762 (2007/10/02)
Chemoselective hydrogenation of various α-nitro ketones was accomplished with 5percent Pt sulfide on carbon as a catalyst to afford α-amino ketone hydrochlorides in good yields.