26638-66-4

Product Details:

CasNo： 26638-66-4

Molecular Formula： C14H11Cl2NO2S

Appearance： White to off-white Solid

Packing： Aluminum bag

Throughput： 1000KG/Month

Purity： 99%

Synonyms:Dibenzo[c,f][1,2]thiazepine,3,11-dichloro-6,11-dihydro-6-methyl-,5,5-dioxide;3,11-DICHLORO-6,11-6-METHYLDIBENZO[C,F][1,2]THIAZEPINE5,5-DIOXIDE;5,8-DICHLORO-10-DIOXO-11-METHYL-DIBENZO[C,F][1,2]THIAZEPINE;DIBENZO[C,F][1,2]THIAZEPINE,3,11-DICHLORO-6,11-DIHYDRO-6-METHYL-,5,5-DIOXIDE (8CI,9CI);3-Chloro-6,11-dihydro-6-methyl-11-chlorodibenzo[c,f][1,2]thiazepine 5,5-dioxide;3,11-Dichloro-6,11-dihydro-6-methyl-5,5-dioxodibenzo[c,f][1,2]thiazepine;rac 3,11-Dichloro-6,11-dihydro-6-methyl-dibenzo[c,f][1,2]thiazepine 5,5-Dioxide;Tianeptine InterMediate (the ninth step)

Synthesis: General procedure for the synthesis of 3,11-dichloro-6,11-dihydro-6-methyl-dibenzo[c,f][1,2]thiazepin-11-ol 5,5-dioxide from 3-chloro-6,11-dihydro-6-methyl-dibenzo[c,f][1,2]thiazepin 5,5-dioxide: the compound of formula III (58.0 g) was suspended in dichloromethane ( 600 ml) and cooled to 0-10°C. Hydrogen chloride gas was passed into the suspension at 0-10°C and the reaction was kept for 2-4 hours. Upon completion of the reaction, the precipitate was collected by filtration and the resulting solid was dried to constant weight to afford the target product 3,11-dichloro-6,11-dihydro-6-methyl-dibenzo[c,f][1,2]thiazepine 5,5-dioxide in 90-95% yield.

References: [1] Patent: WO2010/70667, 2010, A2. Location in patent: Page/Page column 5
                         [2] Journal of Medicinal Chemistry, 1992, vol. 35, # 13, p. 2481 - 2496