Results 71 to 80 of about 14,777 (274)

Cyclohydrocarbonylation-Based Strategy toward Poly- Substituted Piperidines

, 2016
Convenient accesses to enantiomerically pure 2-, 2,3-, 2,6-, 2,3,6-substituted piperidines and 1,4-substituted indolizine are described. At first, indium-mediated aminoallylation and -crotylation of aldehydes with (R)-phenylglycinol or (1R,2S)-1-amino-2 ...
Nicolas Zill (1755679), Jessica Salvadori (2202739), André Mann (1651588), Giada Arena (1923667), Nicolas Girard (321735), Maurizio Taddei (1444585)   +5 more
core   +1 more source

Multiscale Design of Anion Exchange Membrane‐Based Seawater Electrolysis for Sustainable Hydrogen Production

Advanced Energy Materials, EarlyView.
Direct seawater electrolysis using anion exchange membranes is emerging as a promising route for sustainable hydrogen production. This review summarizes multiscale design strategies from seawater chemistry and OER–ClER selectivity to catalysts, membranes, MEAs, cells, stacks, and system integration, providing a roadmap toward selective, durable, and ...
Chiho Kim, Geunhee Yuk, Jong‐Hyeok Park, Shin‐woo Myeong, Jun Seok Ha, Won Tae Hong, Jung Kyu Kim, Sung Mook Choi   +7 more
wiley   +1 more source

Pyrrolo[3,2-c]piperidines

, 2020
The heterocyclization reaction of oximes derived from aliphatic ketones with acetylene has been applied to piperidone oximes. Pyrrole[3,2-c]piperidines substituted on the six-membered ring have been prepared in this manner.
Sergeeva N.D., Prostakov N.S., Borisova T.N., Soldatenkov A.T., Zvolinskii O.V., Astakhov A.A., Varalmov A.V.   +6 more
core   +2 more sources

Asymmetric Synthesis of Chiral, Nonracemic Trifluoromethyl-Substituted Piperidines and Decahydroquinolines

, 2016
Asymmetric Synthesis of Chiral, Nonracemic Trifluoromethyl-Substituted Piperidines and ...
Matthew J. Wyvratt (2093320), Robert J. DeVita (523842), Jinlong Jiang (1394881), Mark T. Goulet (2443948), George A. Doss (2125201)   +4 more
core   +2 more sources

How small changes to methylated piperidinium cations impact the synthesis of zeolite SSZ‐39

AIChE Journal, EarlyView.
Abstract Here we report a synthesis study of SSZ‐39 with four different organic structure directing agents (OSDA). The goal was to determine how subtle changes to the OSDA architecture impact crystallization kinetics, material composition, and other properties.
Onyinyechukwu Ukagha, Daniel F. Shantz
wiley   +1 more source

Stereoselective, nitro-Mannich/lactamisation cascades for the direct synthesis of heavily decorated 5-nitropiperidin-2-ones and related heterocycles

Beilstein Journal of Organic Chemistry, 2012
A versatile nitro-Mannich/lactamisation cascade for the direct stereoselective synthesis of heavily decorated 5-nitropiperidin-2-ones and related heterocycles has been developed. A highly enantioenriched substituted 5-nitropiperidin-2-one was synthesised
Pavol Jakubec, Dane M. Cockfield, Madeleine Helliwell, James Raftery, Darren J. Dixon   +4 more
doaj   +1 more source

Experimental study of local anesthetic and antiarrhythmic activities of fluorinated ethynylpiperidine derivatives [PDF]

Brazilian Journal of Medical and Biological Research
The chemical structure of piperidine has a unique ability to combine with other molecular fragments. This fact makes it possible to actively use it as an effective basis for the creation of new drug-like substances.
E.M. Satbayeva, S.S. Zhumakova, M.D. Khaiitova, U.S. Kemelbekov, F.M. Tursunkhodzhaeva, A.A. Azamatov, Sh.N. Tursymbek, V.Kh. Sabirov, T.S. Nurgozhin, V.K. Yu, T.M. Seilkhanov   +10 more
doaj   +1 more source

Efficacy of different dose of dexmedetomidine combined with remifentanil in colonoscopy: a randomized controlled trial

BMC Anesthesiology, 2020
Background Dexmedetomidine has advantages during colonoscopy as it allows the patient to cooperate during the procedure. Few studies examined the dexmedetomidine-remifentanil combination.
Li Jia, Meng Xie, Jing Zhang, Jingyu Guo, Tong Tong, Yuying Xing   +5 more
doaj   +1 more source

Structurally simple synthetic 1, 4-disubstituted piperidines with high selectivity for resistant Plasmodium falciparum

BMC Pharmacology and Toxicology, 2018
Background Emergence of resistance to artemisinins and some of their combinations in chemotherapy of clinical malaria has intensified the search for novel safe efficacious antimalarial molecules.
Moses N. Ngemenya, Grace Ntube Abwenzoh, Hermia Nalova Ikome, Denis Zofou, Fidele Ntie-Kang, Simon M. N. Efange   +5 more
doaj   +1 more source

Synthesis of Functionalised Piperidines Through a [3 + 3] Cycloaddition Strategy

, 2001
A novel approach to functionalised piperidines is described through a [3 + 3] cycloaddition reaction of aziridines with Pd-trimethylenemethane complexes.
Hedley, Simon J., Harrity, Joseph P. A., Moran, Wesley J., Price, David A., Prenzel, Alexander H. G. P.   +4 more
core   +1 more source