21737-58-6Relevant articles and documents
A new synthesis of oxcarbazepine using a Friedel-Crafts cyclization strategy
Kaufmann, Daniel,Fünfschilling, Peter C.,Beutler, Ulrich,Hoehn, Pascale,Lohse, Olivier,Zaugg, Werner
, p. 5275 - 5278 (2004)
A novel, simple, and straightforward process for the large-scale synthesis of oxcarbazepine, the active ingredient of Trileptal, a medicine for the treatment of epilepsy, has been developed. Starting from readily available 1,3-dihydro-1-phenyl-2H-indol-2-one, a Friedel-Crafts cyclization strategy provides a direct route to the tricyclic framework of the target molecule. Crucial to the success of the strategy was the choice of the proper nitrogen-protecting group.
Synthesis method of high-purity stable crystal form of escilitalopine acetate
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Paragraph 0029, (2022/03/18)
The present invention discloses a high-purity method for the synthesis of escitazepine acetate and a novel stable crystal form thereof. The preparation method disclosed in the present invention is achieved by the following steps: 10-methoxyiminopyrene as the starting material, the starting material is dissolved in acetone and deprotected to form 10-carbonyliminocarbenzene; the use of dichloromethane, borane dimethyl sulfide, (R)-2-methyl -CBS- oxazoleboran asymmetrical reduction to generate (10S)-10-hydroxyiminopyrene; (10S)-10-hydroxyiminostilbeneylated into esters, amidated with chlorosulfonyl isocyanate, To obtain escilitalopine acetate and a stable new crystal form. The preparation method provided by the present invention is simple synthesis process, few reaction steps, less pollution, raw materials are readily available and inexpensive, the final product is easy to purify and separate and the crystal form is stable, and the industrial application prospects are broad.
ORGANIC COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
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Paragraph 0136 - 0139, (2016/10/09)
The present invention relates to a novel compound represented by chemical formula 1, and an organic electroluminescent device comprising the same. The compound according to the present invention can improve light-emitting efficiency, driving voltage, and lifespan of the organic electroluminescent device by being used in an organic layer of the organic electroluminescent device.COPYRIGHT KIPO 2016
Application of nanoparticle mediated N-arylation of amines for the synthesis of pharmaceutical entities using vit-E analogues as amphiphiles in water
Kumar, Atul,Bishnoi, Ajay Kumar
, p. 20516 - 20520 (2015/03/30)
The first CuI-nanoparticle catalyzed inter and intramolecular N-arylation of amines using vitamin E analogues (TPGS) as amphipiles has been developed in water. Application of this transition metal-amphiphile C-N bond formation methodology is further extended for the synthesis of substituted indoles, bioactive natural product tryptanthrin and intermediates of pharmaceutical entities such as imatinib, nilotinib, selective D3 agonist/antagonist ligands, and oxacarbazepine. This journal is