25099-77-8Relevant articles and documents
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Aspinall
, p. 2160 (1940)
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Visible Light-Promoted Aryl Azoline Formation over Mesoporous Organosilica as Heterogeneous Photocatalyst
Wei, Wenxin,Li, Run,Huber, Niklas,Kizilsavas, G?nül,Ferguson, Calum T. J.,Landfester, Katharina,Zhang, Kai A. I.
, p. 3410 - 3413 (2021/05/29)
N-heterocyclic compounds demonstrate wide applications ranging from natural compound production to coordination chemistry. Usually, the synthesis of N-heterocyclic compounds is conducted under thermal conditions, mostly by Lewis acids or metal-containing compounds as molecular catalysts. Here, we report a photocatalytic route for aryl azoline formation by mesoporous organosilica as visible light-active and heterogeneous photocatalyst. Via formation of aromatic aldehydes with various amines, 2-phenyl-2-imidazoline, 2-phenyl-2-oxazoline, 2-phenyl-2-thiazoline and their derivatives could be formed with high conversion and selectivity. Additionally, the organosilica photocatalyst showed high stability and reusability.
1, 4, 5, 6-tetrahydro-pyrimidine derivative synthesis method
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Paragraph 0023-0025, (2017/01/26)
The invention discloses a novel method for synthesizing a 1,4,5,6-tetrahydropyrimidine derivative. The derivative is prepared through reaction between 2-aryl-substituted nitrile and 1,3-diaminopropane with copper cinnamate as a catalyst. The novel method has the advantages that the synthesis technology is simple and does not have strict requirements on reaction conditions, and the catalyst is cheap and can be reutilized, thereby facilitating actual production; the yield can reach 60%-90%.
