1501-98-0Relevant articles and documents
C H Bond Arylation of Diamondoids Catalyzed by Palladium(II) Acetate
Larrosa, Marta,Heiles, Sven,Becker, Jonathan,Spengler, Bernhard,Hrdina, Radim
, p. 2163 - 2171 (2016)
We have developed an effective approach to 1,2-disubstituted diamondoids by palladium(II) acetate catalyzed functionalization of C H bond. Selective mono-arylation of the adamantane framework was achieved using picolylamide as a directing group in yields up to 87 %. Kinetic studies in combination with deuterium labeling experiments, competitive experiments and mass spectrometry contribute to the mechanistic understanding of the arylation process of alkanes with number of C H bonds neighboring the directing group. Triflic anhydride promoted cyclization of the directing group generates imidazo[1,5-a]pyridine derivatives. Acid-mediated removal of the directing group provides access to 2-aryl diamondoid carboxylic acids, which are common precursors for the synthesis of various bioactive compounds (drug candidates). (Figure presented.) .
ADAMANTANYL-SUBSTITUTED BENZAMIDE COMPOUNDS AND THEIR USE AS P2X7 RECEPTOR ANTAGONISTS
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Page/Page column 20; 22-23, (2020/03/15)
The present invention relates to adamantanyl-substituted benzamide compounds and their use as antagonists of the P2X7 purinoreceptor. The invention further relates to methods for the treatment of disease and conditions associated with the P2X7 purinoreceptor.
A cobalt phosphide catalyst for the hydrogenation of nitriles
Jitsukawa, Koichiro,Mitsudome, Takato,Mizugaki, Tomoo,Nakata, Ayako,Sheng, Min,Yamasaki, Jun
, p. 6682 - 6689 (2020/08/24)
The study of metal phosphide catalysts for organic synthesis is rare. We present, for the first time, a well-defined nano-cobalt phosphide (nano-Co2P) that can serve as a new class of catalysts for the hydrogenation of nitriles to primary amines. While earth-abundant metal catalysts for nitrile hydrogenation generally suffer from air-instability (pyrophoricity), low activity and the need for harsh reaction conditions, nano-Co2P shows both air-stability and remarkably high activity for the hydrogenation of valeronitrile with an excellent turnover number exceeding 58000, which is over 20- to 500-fold greater than that of those previously reported. Moreover, nano-Co2P efficiently promotes the hydrogenation of a wide range of nitriles, which include di- and tetra-nitriles, to the corresponding primary amines even under just 1 bar of H2 pressure, far milder than the conventional reaction conditions. Detailed spectroscopic studies reveal that the high performance of nano-Co2P is attributed to its air-stable metallic nature and the increase of the d-electron density of Co near the Fermi level by the phosphidation of Co, which thus leads to the accelerated activation of both nitrile and H2. Such a phosphidation provides a promising method for the design of an advanced catalyst with high activity and stability in highly efficient and environmentally benign hydrogenations. This journal is