On the Formation and <sup>1</sup>H NMR-spectroscopic Characterization of N,N-Diaryl-substituted Formamide Chlorides
作者:Jens Schönewerk、Horst Hartmann
DOI:10.1515/znb-2012-0401
日期:2012.4.1
The reaction of N,N-diaryl-substituted formamides with oxalyl chloride gives rise, instead to the formation of the expected salt-like formamide chlorides, to the formation of corresponding non-ionic N-dichloromethyl-substituted diarylamines.
The tricyclic antipsychotic and antidepressant drug opipramol (opipramole) was examined with regard to the chemical structure of its organic impurities. Impurities were isolated from the technical product by chromatographic methods and their chemical structures were established by 1H NMR, MS and FTIR and further confirmed by comparison with commercially available products or with products obtained by independent synthesis, and in one case additionally by X-ray structure analysis.
对三环抗精神病和抗抑郁药物奥匹哌醇(opipramole)的有机杂质的化学结构进行了研究。通过色谱法从技术产品中分离出了杂质,并通过 1H-核磁共振、质谱和傅立叶变换红外光谱确定了它们的化学结构,还通过与市售产品或通过独立合成获得的产品进行比较,以及在一种情况下通过 X 射线结构分析进一步确认了它们的化学结构。
Novel Applications of Acridinium Compounds and Derivatives in Homogeneous Assays
申请人:Natrajan Anand
公开号:US20080305557A1
公开(公告)日:2008-12-11
Chemiluminescent acridinium compounds are used in homogeneous assays to determine the concentration of an analyte in a sample without strong acid or strong base treatment. The chemiluminescent acridinium compounds include acridinium esters with electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus to inhibit pseudo-base formation, or acridinium sulfonamides with or without electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus.
作者:Glace, Matthew、Kraus, Harrison、Wu, Wei、Acevedo, David、Liu, Dongxia、Roper, Thomas D.、Mohammad, Adil
DOI:10.1021/acs.oprd.4c00081
日期:——
A scalable continuous manufacturing process for the synthesis and crystallization of form III carbamazepine (CBZ) from iminostilbene (ISB) has been established. A high-yielding synthesis was first obtained using a plug flow reactor (PFR) and then scaled up using a continuous oscillatory baffled reactor (COBR). A real-time in-line Raman spectroscopy method was implemented to ensure that the conversion
已经建立了一种可扩展的连续生产工艺,用于从亚氨基芪 (ISB) 合成和结晶 III 型卡马西平 (CBZ)。首先使用活塞流反应器 (PFR) 获得高产率合成,然后使用连续振荡挡板反应器 (COBR) 进行放大。实施实时在线拉曼光谱方法以确保起始原料ISB到产物CBZ的转化率保持在99.0%以上。将监测到的产物流放入混合悬浮液混合产物结晶器 (MSMPR-1) 和过滤装置中,以分离初步的 CBZ 晶型 I 多晶型物。通过使用从显微镜测量得出的晶体生长模型来设计冷却重结晶过程。比较了间歇式和流动式工艺的杂质净化能力和多晶型效果。本研究概述了工艺建模和工艺分析技术 (PAT) 在伸缩式连续制造工艺中杂质净化中的作用。
Pindur, U.; Flo, C., Journal of Heterocyclic Chemistry, 1989, vol. 26, p. 1563 - 1568