超声波加湿器原理:氯安定 [CAS:1622-61-3]合成路线图解??有机化学网

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药物详细合成路线

Chemical Name: 5-(2-Chlorophenyl)-7-nitro-2,3-dihydro-1H-1,4-benzodiazepin-2-one Generic Name: 氯安定;Clonazepam Other Names: Clonazepam;Ro-5-4023;Klonopin Wafers;Rivotril;Klonopin;Clonopin CAS: 1622-61-3 Formula: C15H10ClN3O3 Mole Weight: 315.71825 structure: Company: Chugai (Originator), Roche (Originator), Solvay (Marketer) Usage: Antiepileptic Drugs, Anxiolytics, NEUROLOGIC DRUGS, PSYCHOPHARMACOLOGIC DRUGS, Benzodiazepines, GABA(A) BZ Site Receptor Agonists Route 1 A new commercially viable process to clonazepam has been reported. Chloroacetamide intermediate (I) was activated as the corresponding iodide (II) by Finkelstein exchange reaction with KI in acetone. Subsequent displacement by ammonia in EtOAc as the solvent afforded the glycine amide (III). Finally, cyclization of (III) in the presence of ethanolic pyridine gave rise to the title benzodiazepinone. Intermediates: Serial No. 1-(4-isobutylphenyl)-1-butanone (I) 6-methoxy-6-oxohexanoic acid (II) methyl 6-chloro-6-oxohexanoate (III) Reference 1:     McDonough, J.A.; et al.; Development of a commercially viable clonazepam process. Org Process Res Dev 1997, 1, 4, 268.
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