Synthetic Route of 1195768-23-0, Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 1195768-23-0, name is N-(3-(2-(tert-Butyl)-5-(2-chloropyrimidin-4-yl)thiazol-4-yl)-2-fluorophenyl)-2,6-difluorobenzenesulfonamide. A new synthetic method of this compound is introduced below.
Step D : N- { 3 – [ 5-(2-amino-4-pyrimidiny l)-2-( 1 , 1 -dimethy lethyl)- 1 ,3 -thiazol-4-yl] -2- fluorophenyl} -2,6-difluorobenzenesulfonamide: In 1 gal pressure reactor, a mixture of N- {3-[5-(2-chloro-4-pyrimidinyl)-2-(l,l- dimethylethyl)-l,3-thiazol-4-yl]-2-fluorophenyl} -2,6-difluorobenzenesulfonamide (120 g) prepared in accordance with Step C, above, and ammonium hydroxide (28-30%, 2.4 L, 20 vol) was heated in the sealed pressure reactor to 98-103 C and stirred at this temperature for 2 hours. The reaction was cooled slowly to room temperature (20 C) and stirred overnight. The solids were filtered and washed with minimum amount of the mother liquor and dried under vacuum. The solids were added to a mixture of EtOAc (15 vol)/ water (2 vol) and heated to complete dissolution at 60-70 C and the aqueous layer was removed and discarded. The EtOAC layer was charged with water (1 vol) and neutralized with aq. HC1 to ~pH 5.4-5.5. and added water (lvol). The aqueous layer was removed and discarded at 60-70 C. The organic layer was washed with water (1 vol) at 60-70 C and the aqueous layer was removed and discarded. The organic layer was filtered at 60 C and concentrated to 3 volumes. EtOAc (6 vol) was charged into the mixture and heated and stirred at 72 C for 10 min , then cooled to 20C and stirred overnight. EtOAc was removed via vacuum distillation to concentrate the reaction mixture to ~3 volumes. The reaction mixture was maintained at ~65-70C for ~30mins. Product crystals having the same crystal form as those prepared in Example 58b (and preparable by the procedure of Example 58b), above, in heptanes slurry were charged. Heptane (9 vol) was slowly added at 65-70 C. The slurry was stirred at 65-70 C for 2-3 hours and then cooled slowly to 0-5C. The product was filtered, washed with EtO Ac/heptane (3/1 v/v, 4 vol) and dried at 45 C under vacuum to obtain N- {3 – [5 -(2-amino-4-pyrimidinyl)-2-( 1 , 1 -dimethylethyl)- 1 , 3 -thiazol-4-yl] -2- fluorophenyl}-2,6-difluorobenzenesulfonamide (102.3 g, 88%).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1195768-23-0, its application will become more common.
Reference:
Patent; NOVARTIS AG; CAPONIGRO, Giordano; HORN-SPIROHN, Thomas; LEHAR, Joseph; (49 pag.)WO2017/37587; (2017); A1;,
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