Results 31 to 40 of about 37,707 (289)
Piperidin aus Pentamethylendiamin [PDF]
Berichte der deutschen chemischen Gesellschaft, 1885 n ...
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Structures of piperazine, piperidine and morpholine [PDF]
Acta Crystallographica Section B Structural Science, 2004 The crystal structures of piperazine, piperidine and morpholine have been determined at 150 K. All three structures are characterized by the formation of NH...N hydrogen-bonded chains. In piperazine these are linked to form sheets, but the chains are shifted so that the molecules interleave. In morpholine there are in addition weak CH...O interactions.
Parkin, A, Oswald, I D H, Parsons, S
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Beilstein Journal of Organic Chemistry, 2010 We report the synthesis of a novel analogue of Alogliptin via condensation of two key intermediates one of which is an aminopiperidine derivative bearing a spirocyclic ring on the piperidine moiety.
Arumugam Kodimuthali +2 more
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Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023 A highly efficient stereoinvertive nucleophilic substitution at the quaternary carbon stereocenter of cyclopropyl carbinol derivatives using water, alcohols and phenols as nucleophiles is reported. A variety of highly sterically hindered tertiary alkyl ethers and alcohols with adjacent tertiary carbon stereocenters are obtained in good yields with ...
Xu Chen, Kaushalendra Patel, Ilan Marek
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Beilstein Journal of Organic Chemistry, 2011 PEG-embedded potassium tribromide ([K+PEG]Br3−) was found to be an efficient and recyclable catalyst for the synthesis of functionalized piperidines in high yields in a one step, three component coupling between aldehyde, amine and β-keto ester.
Sanny Verma, Suman L. Jain, Bir Sain
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Regioselective ring opening of aziridine for synthesizing azaheterocycle
Frontiers in Chemistry, 2023 Aziridine had different regioselective ring openings depending on the functional group of its alkyl substituent. In the case of the alkyl group bearing γ-ketone at the C2 substituent of aziridine, the ring opening by the hydroxy nucleophile from H2O ...
Nikhil Srivastava, Hyun-Joon Ha
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Ammonium piperidine-1-carbodithioate [PDF]
Acta Crystallographica Section E Structure Reports Online, 2011 The title compound, NH(4) (+)·C(6)H(10)NS(2) (-), is composed of an ammonium cation and a piperidine-1-carbodithio-ate anion which exhibits positional disorder. The atoms of the ring have a structural disorder and they are divided into two sites, with occupancy factors of 0.584 and 0.426..
Maria Teresa do Prado Gambardella +1 more
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Synthesis and reactions of 4-(p-methoxybenzyl)-6-[5,6,7,8-tetrahydro-2-naphthyl]-pyridazin-3(2H-one [PDF]
Journal of the Serbian Chemical Society, 1999 The condensation of 4-(p-methoxybenzyl)-6-[5,6,7,8-tetrahydro-2-naphthyl]- pyridazin-3(2H)-one (3), prepared by the reaction of 6-[5,6,7,8-tetrahydro-2-naphthyl]-4,5-dihydropyridazin-3(2H)-one (1) and anisaldehyde, with dimethyl sulphate, formal-
El-Din Harb Nagwa M.S.
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Sulfonamides with Heterocyclic Periphery as Antiviral Agents
Molecules, 2022 Sulfonamides are the basic motifs for a whole generation of drugs from a large group of antibiotics. Currently, research in the field of the new sulfonamide synthesis has received a “second wind”, due to the increase in the synthetic capabilities of ...
Mikhail Yu. Moskalik
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VI.—Compounds of piperidine with phenols [PDF]
J. Chem. Soc., Trans., 1898 n ...
Rosenheim, Otto, Schidrowitz, Philip
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