117976-89-3Relevant articles and documents
An improved process for the production of rabeprazole sodium substantially free from the impurities
Reddy, Pingili Ramchandra,Himabindu, Vurimidi,Jaydeepkumar, Lilakar,Reddy, Ganta Madhusudhan,Kumar, Jonnalagadda Vijaya,Reddy, Ghanta Mahesh
, p. 896 - 899 (2009)
The present work details the journey towards development of a simple and cost-viable process for large-scale synthesis of rabeprazole sodium substantially free from the impurities. The detailed study of different parameters affecting the quality and yield percentage of the compound has been presented. Yield is increased from 40% (reported process) to 75% with the improved process at sulfoxidation stage.
Method for preparing benzimidazole proton pump inhibitor
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Paragraph 0042; 0043; 0044; 0046; 0047; 0048; 0078; 0079, (2018/09/08)
The invention provides a novel method for preparing a benzimidazole proton pump inhibitor, and belongs to the field of medicine synthesis. According to the method provided by the invention, a complexformed by using graphene oxide and a transition metal salt is used as a catalyst, and the corresponding benzimidazole proton pump inhibitor is obtained through oxidizing a thioether by an oxidizing agent under an alkaline condition in an organic solvent. The method has the advantages of mild reaction condition, high yield, environmental friendliness, and less impurity, the catalyst can be recycled, and the method is suitable for industrial production.
Method for preparing optically-pure Rabeprazole
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Paragraph 0070; 0071; 0072; 0073; 0074, (2017/08/28)
The invention discloses a method for preparing optically-pure Rabeprazole. The method is used for preparing a chiral 2-[[4-(3-methoxypropoxy)-3-methylpyrid-2-yl]methylsulfinyl]-1H-benzimidazole compound (Rabeprazole), which is present in a single-enantiomer form or rich-enantiomer form, in an enantioselective manner. The same effects, i.e., identical enantioselectivity and conversion ratio can be achieved through complexing a tartaric acid diamide ligand and titanium and adding an organic-base additive or not in the presence of water. The invention further provides a method for preparing a sodium salt from the obtained Rabeprazole.