20781-22-0Relevant articles and documents
Palladium-catalyzed oxygenation of C(sp2)-H and C(sp3)-H bonds under the assistance of oxalyl amide
Liu, Pei,Han, Jian,Chen, Chang Peng,Shi, Da Qing,Zhao, Ying Sheng
, p. 28430 - 28434 (2015)
A practical palladium-catalyzed γ-oxygenation of C(sp2)-H and C(sp3)-H bonds under the assistance of oxalyl amide with PhI(OAc)2 as oxidant was developed. Selective alkoxylation or acetoxylation of oxalyl amide protected benzyl amine was achieved in high yield. The oxalyl amide protected α-substituted propylamines could be transformed into acetoxylated products in good to excellent yields.
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.
2-substituted parazoleamino-4-substituted amino-5-pyrimidine formamide compound, composition and application thereof
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Paragraph 0121-0122; 0129, (2019/04/10)
The invention relates to a series of new compounds as a JAK inhibitor, as well as compositions and applications thereof, and particularly provides a series of compounds (I) that have a strong JAK inhibiting activity, or stereisomers, geometrical isomers, tautomers, pharmaceutically acceptable salts, prodrugs, metabolites, isotope derivatives, and solvates, as well as medicine compositions comprising such compounds. The invention also discloses applications of the compounds or the medicine compositions in preparation of a medicine, which is used for treatment of autoimmune diseases or cancer.
Dynamic kinetic asymmetric synthesis of substituted pyrrolidines from racemic cyclopropanes and aldimines: Reaction development and mechanistic insights
Parsons, Andrew T.,Smith, Austin G.,Neel, Andrew J.,Johnson, Jeffrey S.
supporting information; experimental part, p. 9688 - 9692 (2010/09/06)
An enantioselective preparation of 2,5-cis-disubstituted pyrrolidines has been achieved via a dynamic kinetic asymmetric transformation (DyKAT) of racemic donor-acceptor cyclopropanes and (E)-aldimines. Mechanistic studies suggest that isomerization of the aldimine or resultant iminium to the Z geometry is not a pathway that furnishes the observed 2,5-cis-disubstituted products.
