作者:Peter C. Fuenfschilling、Werner Zaugg、Ulrich Beutler、Daniel Kaufmann、Olivier Lohse、Jean-Paul Mutz、Ulrich Onken、Jean-Louis Reber、David Shenton
DOI:10.1021/op049760a
日期:2005.5.1
A novel industrial process for the antiepileptic drug oxcarbazepine I has been developed. Unlike the old process, the new process is free from halogenated solvents and can be performed in standard production equipment. It starts from commercially available 1,3-dihydro-1-phenyl-2H-indol-2-one 10. In the key step, an electrophilic ring closure reaction of 2-[(methoxycarbonyl)phenylamino] benzeneacetic acid 5 to 10,11-dihydro-10-oxo-5H-dibenz[b,f]azepine-5-carboxylic acid methyl ester 6 in poly phosphoric acid was applied. For the manufacture of 5, a highly efficient process using a dianion strategy was developed.