35779-35-2Relevant articles and documents
Helical and zigzag coordination polymeric chains derived from di-3-pyridyl ketone and silver(I) salts
Chen, Xu-Dong,Mak, Thomas C.W.
, p. 1 - 6 (2005)
A series of silver(I) complexes [AgL(X)]∞ (X=BF 4, ClO4, NO3, CF3SO3, PF6; L=di-3-pyridyl ketone) have been characterized by X-ray crystallography. Argentophilic interaction, π-π stacking, Ag?X interaction, C-H?X (X=F, O) and C-H?O=C hydrogen bonding contribute to different extents in the construction of helical or zigzag infinite chains.
Fukuyama Cross-Coupling Approach to Isoprekinamycin: Discovery of the Highly Active and Bench-Stable Palladium Precatalyst POxAP
Tang, Shuang-Qi,Bricard, Jacques,Schmitt, Martine,Bihel, Frédéric
, p. 844 - 848 (2019/01/30)
An efficient and user-friendly palladium(II) precatalyst, POxAP (post-oxidative-addition precatalyst), was identified for use in Fukuyama cross-coupling reactions. Suitable for storage under air, the POxAP precatalyst allowed reaction between thioesters and organozinc reagents with turnover numbers of ~90000. A series of 23 ketones were obtained with yields ranging from 53 to 99%. As proof of efficacy, an alternative approach was developed for the synthesis of a key precursor of the natural product isoprekinamycin.
Catalytic Enantioselective Pyridine N-Oxidation
Hsieh, Sheng-Ying,Tang, Yu,Crotti, Simone,Stone, Elizabeth A.,Miller, Scott J.
supporting information, p. 18624 - 18629 (2019/11/21)
The catalytic, enantioselective N-oxidation of substituted pyridines is described. The approach is predicated on a biomolecule-inspired catalytic cycle wherein high levels of asymmetric induction are provided by aspartic-acid-containing peptides as the aspartyl side chain shuttles between free acid and peracid forms. Desymmetrizations of bis(pyridine) substrates bearing a remote pro-stereogenic center substituted with a group capable of hydrogen bonding to the catalyst are demonstrated. Our approach presents a new entry into chiral pyridine frameworks in a heterocycle-rich molecular environment. Representative functionalizations of the enantioenriched pyridine N-oxides further document the utility of this approach. Demonstration of the asymmetric N-oxidation in two venerable drug-like scaffolds, Loratadine and Varenicline, show the likely generality of the method for highly variable and distinct chiral environments, while also revealing that the approach is applicable to both pyridines and 1,4-pyrazines.
Palladium-catalyzed synthesis of diaryl ketones from aldehydes and (hetero)aryl halides via C-H bond activation
Wakaki, Takayuki,Togo, Takaya,Yoshidome, Daisuke,Kuninobu, Yoichiro,Kanai, Motomu
, p. 3123 - 3128 (2018/04/14)
We developed a palladium-catalyzed C-H transformation that enabled the synthesis of ketones from aldehydes and (hetero)aryl halides. The use of picolinamide ligands was key to achieving the transformation. Heteroaryl ketones, as well as diaryl ketones, were synthesized in good to excellent yields, even in gram-scale, using this reaction. Results of density functional theory (DFT) calculations support the C-H bond activation pathway.
Synthesis and photoluminescent properties of new ceramidine derivatives
Park, Byung Sun,Lee, Sang Woo,Kim, In Tae,Tae, Jin Sung,Lee, So Ha
experimental part, p. 66 - 73 (2012/03/26)
A series of new ceramidine derivatives 8a-f has been synthesized in 4-5 steps involving a Wittig reaction of ceramidonine with various triphenylphosphonium bromides. Their UV and photoluminescence (PL) properties are reported. The compounds showed medium to strong PL between 502 and 522 nm at a concentration of 1 × 10-5 M CH2Cl2.
NEW COMPOUNDS I/418
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Page/Page column 34-35, (2008/06/13)
There is provided compounds of formula I, wherein R1 to R7 have meanings given in the description, which are useful in the prophylaxis and in the treatment of arrhythmias, in particular atrial and ventricular arrhythmias.
POTASSIUM CHANNEL INHIBITORS
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Page/Page column 47, (2010/10/19)
The present invention relates to compounds having the structure useful as potassium channel inhibitors to treat cardiac arrhythmias, and the like.
Substituted heterocyclylisoquinolinium salts and compositions and method of use thereof
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, (2008/06/13)
Substitutued heterocyclylisoquinolinium salts, pharmaceutical compositions containing them and methods for the treatment or prevention of neurodegenerative disorders or neurotoxic injuries utilizing them.
Substituted 6,11-ethano-6,11-dihydrobenzo[b] quinolizinium salts and compositions and methods of use thereof
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, (2015/04/15)
Substituted 6,11-ethano-6,11-dihydrobenzo[b]quinolizinium salts, pharmaceutical compositions containing them, and methods for the treatment of neurodegenerative disorders or neurotoxic injuries utilizing them, wherein the substituted 6,11-ethano-6,11-dihydrobenzo[b]quinolizinium salts have the formula: STR1 wherein: R1, R2, R3, R4, R5, R6, R7, X and p are as defined in the specification.
Fungicidal Pyridine Derivatives I: α-Trichloromethyl-3-pyridinemethanols
Sauter, Fritz,Stanetty, Peter,Sittenthaler, Wilhelm,Waditschatka, Rudolf
, p. 1427 - 1438 (2007/10/02)
The title substances, a new type of compounds with fungicidal activity, were synthesized by addition of trichloromethyllithium (and tribromomethyllithium resp.) to various 3-pyridyl ketones at -100 deg C. - Keywords: Fungicides; Pyridinemethanoles; Trichl