4904-83-0Relevant articles and documents
Intermediate compound, carbamazepine and derivative thereof as well as preparation method of oxcarbazepine and derivative thereof
-
Paragraph 0125; 0128; 0129, (2019/12/25)
The invention provides an intermediate compound, carbamazepine and a derivative thereof as well as a preparation method of oxcarbazepine and a derivative thereof. 2-substituted aminophenylacetate or 2-substituted aminophenylacetonitrile and 2-halobenzonitrile are used as raw materials, substitution reaction, intramolecular condensation reaction, hydrolysis and hydrochloric acid acidification are carried out to obtain the oxcarbazepine and the derivative 5-substituent-10-oxa-10, 11-dihydro-5H-dibenzo [b, f] aza thereof, and the derivative of the oxcarbazepine can be used as a raw material to prepare the carbamazepine and the derivative 5-substituted iminostilbene thereof, an intermediate compound iminostilbene and intermediate compounds 5-substituted-10-methoxyiminostilbene and 10-methoxyiminostilbene. The raw materials used in the method are cheap and easy to obtain, and the cost is low; the preparation method is simple, conditions are easy to realize, the method is simple, convenientand safe to operate, and the process flow is short; the production amount of three wastes is small, and thus, the method is environmentally friendly; and a target product has high yield and purity, and is suitable for industrial production.
Synthesis of benzo-fused heterocycles by intramolecular α-arylation of ketone enolate anions
Guastavino, Javier F.,Rossi, Roberto A.
, p. 460 - 472 (2012/03/11)
A two-step synthesis of six-, seven-, eight-, and nine-member benzo-fused heterocycles in good to excellent yields is reported. The synthetic strategy involves the generation of a new intramolecular α-aryl ketone bond by the photostimulated SRN1 reaction of ketone enolate anions linked to a pendant haloarene as the key step. On the other hand, an intramolecular C Ar-CAr coupling led to the formation of five- and six-member benzo-fused heterocycles (9H-carbazole and phenanthridine) when an aromatic amide anion is competitively formed.
N-substituted azaheterocyclic carboxylic acids and alkylesters thereof
-
, (2008/06/13)
The present invention relates to novel N-substituted azaheterocyclic carboxylic acids and esters thereof in which a substituted alkyl chain forms part of the N-substituent or salts thereof, to methods for their preparation, to compositions containing them, and to their use for the clinical treatment of painful, hyperalgesic and/or inflammatory conditions in which C-fibers play a pathophysiological role by eliciting neurogenic pain or inflammation.