14554-17-7Relevant academic research and scientific papers
Asymmetric Hydrogenation of β-Secondary Amino Ketones Catalyzed by a Ruthenocenyl Phosphino-oxazoline-ruthenium Complex (RuPHOX-Ru): The Synthesis of γ-Secondary Amino Alcohols
Wang, Jianxia,Wang, Yanzhao,Liu, Delong,Zhang, Wanbin
, p. 3262 - 3272 (2015/11/03)
A ruthenocenyl phosphino-oxazoline-ruthenium complex (RuPHOX-Ru) was applied successfully to the asymmetric hydrogenation of β-secondary amino ketones, directly affording the corresponding chiral γ-secondary amino alcohols in up to 99% yield and with 99% ee. Reaction with β-(benzylamino)-1-phenylpropan-1-one could be performed on a gram-scale with a relatively low catalyst loading (up to 2000 S/C). The resulting hydrogenated product could be used for the synthesis of synthetically useful compounds.
Mannich bases as synthetic intermediates: Alkylation of amines and diamines with bis-ketonic Mannich bases
Afsah, Elsayed M.,Hammouda, Metwally,Khalifa, Mona M.,Al-shahaby, Essam H.
experimental part, p. 577 - 584 (2009/02/03)
The bis-ketonic Mannich base, N,N-bis(β-benzoylethyl)methylamine hydrochloride (1) reacts with primary arylamines and diamines to give ketonic sec-arylamines 3a-e and 4. The piperidines 7a-c were obtained from 1 and primary alkylamines, whereas the 1,4-diazepine derivative 10 was obtained from 1 and ethylenediamine. Treatment of the bis-base l,4-di[β-(N-morpholino) propionyl]benzene bis(hydrochloride) (11) with primary arylamines gave the corresponding bis-(sec-arylamines) 12a - b, whereas its reaction with o-phenylenediamine afforded the bis[1,5-benzodiazepine] ring system 14. The synthesis of the diazacyclophane ring system 15 has been achieved by treating 11 with piperazine. Attempted synthesis of 4-aza-[7]-paracyclophane (16) from 11 and benzylamine led to 17. The reaction of 1 or 11 with phenylhydrazine gave the 2-pyrazolines 18 and 19. Treatment of 3 or 4 with phenylhydrazine and formaldehyde afforded the 2H-1,2,4-triazepines 20a-c and the bis[2H-1,2,4-triazepine] ring system 21.
2-Substituted-9-phenyl-2,3,4,4a,9,9a-hexahydro-1H-indeno[2,1-c]pyridines and related compounds
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, (2008/06/13)
2-Substituted-9-phenyl-2,3,4,4a,9,9a-hexahydro-1H-indeno[2,1-c]pyridines having anti-arrhythmic activity are described herein. The subject compounds can be prepared by reduction of the corresponding 2-Substituted-9-phenyl-2,3-dihydro-1H-indeno[2,1-c]pyrid
1-(Substituted-aminoalkyl)-3-benzoyl-4-hydroxy-4-phenylpiperidines and related compounds
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, (2008/06/13)
1-(Substituted-aminoalkyl)-3-benzoyl-4-hydroxy-4-phenylpiperidines and related compounds having anti-arrhythmic activity are described herein. The 3-benzoyl compounds can be prepared by condensing the appropriate diamine with acetophenone and formaldehyde
