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. 162787-61-3, name is 2-(Methylsulfonamido)benzoic acid, A new synthetic method of this compound is introduced below., SDS of cas: 162787-61-3
O-Benzoic acid methanesulfonamide (0.060g, 0.28 mmol), HATU(0.213g, 0.56 mmol), and pyridine(68ul, 0.84 mmol), were dissolved in anhydrous DMF (8 ml). The reaction was stirred under nitrogen for 2 hours to activate the acid. When activation was approximately 80% complete by LC/MS (2 hr) the piperidine intermediate 28 (0.073g, 0.28 mmol), along with DIPEA (96ul, 0.56mmol) were added dissolved in DMF(4 ml). The reaction was stirred overnight while monitoring by LC/MS. Solvents were removed by rotary evaporation. The residue was taken up in DCM (100 ml)and washed with water (5 x 100 ml). The organic layer was collected, dried over MgS04, filtered and evaporated. The residue was taken up in DCM and columned on silica gel using a gradient of 0 to 10% MeOH : DCM to afford compound 26 (65 mg, 0.143 mmol, 51 %).1H-NMR (CD3CN, 300 MHz): delta 1.58 (m, 2H), 1.75 (m, 2H), 2.22 (s, 1H), 2.40 (s, 3H), 2.42 (s, 1H), 2.44 (s, 3H), 3.01 (m, 4H), 3.39 (m, 3H), 6.20 (s, 1H), 6.37 (m, 1H), 7.25-7.60 (m, 4H), 8.36 (bs, 1H).
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; GILEAD SCIENCES, INC.; BABAOGLU, Kerim; BOOJAMRA, Constantine, G.; EISENBERG, Eugene, J.; HUI, Hon Chung; MACKMAN, Richard, L.; PARRISH, Jay, P.; SANGI, Michael; SAUNDERS, Oliver, L.; SIEGEL, Dustin; SPERANDIO, David; YANG, Hai; WO2011/163518; (2011); A1;,
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