39169-94-3Relevant articles and documents
Selective catalysis for the reductive amination of furfural toward furfurylamine by graphene-co-shelled cobalt nanoparticles
Liu, Jianguo,Ma, Longlong,Zhong, Shurong,Zhuang, Xiuzheng
, p. 271 - 284 (2022/01/19)
Amines with functional groups are widely used in the manufacture of pharmaceuticals, agricultural chemicals, and polymers but most of them are still prepared through petrochemical routes. The sustainable production of amines from renewable resources, such as biomass, is thus necessary. For this reason, we developed an eco-friendly, simplified, and highly effective procedure for the preparation of a non-toxic heterogeneous catalyst based on earth-abundant metals, whose catalytic activity on the reductive amination of furfural or other derivatives (more than 24 examples) proved to be broadly available. More surprisingly, the cobalt-supported catalyst was found to be magnetically recoverable and reusable up to eight times with an excellent catalytic activity; on the other hand, the gram-scale tests catalyzed by the same catalyst exhibited the similar yield of the target products in comparison to its smaller scale, which was comparable to the commercial noble-based catalysts. Further results from a series of analytical technologies involving XRD, XPS, TEM/mapping, and in situ FTIR revealed that the structural features of the catalyst are closely in relation to its catalytic mechanisms. In simple terms, the outer graphitic shell is activated by the electronic interaction as well as the induced charge redistribution, enabling the easy substitution of the –NH2 moiety toward functionalized and structurally diverse molecules, even under very mild industrially viable and scalable conditions. Overall, this newly developed catalyst introduces the synthesis of amines from biomass-derived platforms with satisfactory selectivity and carbon balance, providing cost-effective and sustainable access to the wide applications of reductive amination.
Carbazole-Terpyridine Donor-Acceptor Dyads with Rigid π-Conjugated Bridges
Matteucci, Elia,Baschieri, Andrea,Sambri, Letizia,Monti, Filippo,Pavoni, Eleonora,Bandini, Elisa,Armaroli, Nicola
, p. 1353 - 1365 (2019/07/18)
A series of molecules in which 9H-carbazole (electron donor, D) and 2,2′:6′,2′′-terpyridine (electron acceptor, A) are connected through rigid π-conjugated bridges (D-π-A systems) have been synthesized and their photophysical properties examined in detail, with the support of DFT calculations. The bridges are made of different sequences of ethynylene, phenylene, and anthracene groups. The synthetic strategies involve condensation of 2-acetylpyridine with the aromatic aldehyde moiety on different functionalized π-conjugated bridges and couplings with carbazole derivatives. The system incorporating anthracene in the bridge shows the typical absorption and emission fingerprints of this polycyclic hydrocarbon. The other systems have HOMOs and LUMOs centred, respectively, over the carbazole and the bridge and exhibit solvatochromic charge-transfer (CT) luminescence with high photoluminescence yield up to 70 %, except when an ethynylene unit is directly attached to the carbazole ring, due to a trans-bent non-emissive π–σ* excited state.
Anti-tumor compound of targeting Neddylation path
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Paragraph 0069; 0073; 0074, (2019/01/07)
The invention discloses an anti-tumor compound of a targeting Neddylation path. The compound can be represented by a structural formula shown as a general formula I, a general formula II, a general formula III, a general formula IV, a general formula V, a general formula VI or a general formula VII. The compound provided by the invention has good anti-tumor activity; a plurality of compounds are close to a positive control drug MLN4924 and can be used as the good anti-tumor compound. The compound and a composition, provided by the invention, can be used with other drugs to provide combined therapy, and the other drugs can form a part of the same composition or can be used as different components for drug administration at the same time or at different time.