Results 71 to 80 of about 24,581 (324)
Molecules, 2019 A method for the HMPA (hexamethylphosphoric triamide)-catalyzed metal-free transfer hydrogenation of pyridines has been developed. The functional group tolerance of the existing reaction conditions provides easy access to various piperidines with ester ...
Yun Fu, Jian Sun
doaj +1 more source
Organophotocatalysed synthesis of 2-piperidinones in one step via [1 + 2 + 3] strategy
Nature Communications, 2023 Six-membered N-containing heterocycles, such as 2-piperidinone derivatives, with diverse substitution patterns are widespread in natural products, drug molecules and serve as key precursors for piperidines.
Yi-Dan Du +6 more
doaj +1 more source
Transaminase triggered aza-Michael approach for the enantioselective synthesis of piperidine scaffolds [PDF]
, 2016 The expanding “toolbox” of biocatalysts opens new opportunities to redesign synthetic strategies to target molecules by incorporating a key enzymatic step into the synthesis.
Andrew Gomm +6 more
core +3 more sources
Advanced Materials, EarlyView.Inspired by mussel proteins, YDC‐Gel‐Zn is a smart bone glue designed for osteoporotic implants. It adheres strongly to both metal implants and bone for initial fixation. In osteoporosis's inflammatory environment, it sequentially releases zinc ions and therapeutic peptides: the zinc modulates immune cells to reduce inflammation, while the peptides ...
Wentao Wang +9 more
wiley +1 more source
Thiosulfonate‐Derived BODIPY “Stick and Glue” Strategy for Fluorescent Thiol Labeling
Angewandte Chemie, EarlyView.We present a powerful photochemical strategy for converting disulfide bonds into stable thioether linkages via a [1,2]‐sigmatropic rearrangement. By integrating this reaction into traditional methanethiosulfonate‐based thiol labeling, we enable light‐triggered stabilization of peptide and protein conjugates with enhanced robustness and versatility ...
Lucie Šálková +4 more
wiley +2 more sources
Base-catalyzed reactions of environmentally relevant N-chloro-piperidines. A quantum-chemical study [PDF]
, 2011 Electronic structure methods have been applied to calculate the gas and aqueous phase reaction energies for base-induced rearrangements of N-chloropiperidine, N-chloro-3-(hydroxymethyl)piperidine, and N-chloro-4-4-fluorophenyl)-3-(hydroxymethyl ...
Sakic, Davor +2 more
core +1 more source
Advanced Synthesis &Catalysis, EarlyView.A novel methodology for the construction of aromatic and heteroaromatic trifluoropropynyl derivatives has been developed. The new protocol is based on a tandem Sonogashira cross‐coupling reaction between a bench‐stable trifluoropropynyl carbinol reagent, generated from the commercially available and inexpensive hydrofluoroolefin‐1234yf gas, and (hetero)
Emma Bodnár +3 more
wiley +1 more source
Synthesis and Evaluation of Novel Iminosugars Prepared from Natural Amino Acids
Molecules, 2021 Cyclopropanated iminosugars have a locked conformation that may enhance the inhibitory activity and selectivity against different glycosidases. We show the synthesis of new cyclopropane-containing piperidines bearing five stereogenic centers from natural
Alejandro Puet +3 more
doaj +1 more source
Nickel-catalyzed transamidation of aliphatic amide derivatives. [PDF]
, 2017 Transamidation, or the conversion of one amide to another, is a long-standing challenge in organic synthesis. Although notable progress has been made in the transamidation of primary amides, the transamidation of secondary amides has remained ...
Baker, Emma L +2 more
core +1 more source
Sodium piperidine-1-carbodithioate dihydrate [PDF]
Acta Crystallographica Section E Structure Reports Online, 2011 The asymmetric unit of the title compound, Na(+)·C(6)H(10)NS(2) (-)·2H(2)O, is composed of a sodium cation, a piperidine-dithio-carbamate anion which exhibits positional disorder, and two lattice water mol-ecules. The atoms of the piperidine ring are divided over two sites with occupancy factors of 0.554 (6) and 0.446 (6).
Ana C. Mafud +1 more
openaire +3 more sources