Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 19745-07-4, name is 2,5-Dichloropyrazine, This compound has unique chemical properties. The synthetic route is as follows., Computed Properties of C4H2Cl2N2
Preparation of N-fdelta-chloroDyrazin^-vD-N-methylethanesulfonamide (SM-9):(SM-9)To a solution of N-methyl-ethanesufonamide (400 mg, 3.25 mmol) in methanol (2.2 ml_) was added potassium hydroxide (85percent, 214 mg, 3.25 mmol). Solvent was removed and the potassium salt was suspended in dimethylsulfoxide (1.0 ml_) and added to a stirred solution of 2,5- dichloropyrazine (484 mg, 3.25 mmol) in dimethylsufoxide (1.0 ml_). The resulting dark colored reaction mixture was stirred at room temp for 45 minutes. The reaction mixture was quenched in ice water and the dark suspension was extracted three times with dichloromethane. The combined organics were washed with brine, dried over sodium sulfate and flash chromatographed eluting with a 0-40percent gradient of ethyl acetate in heptane to afford N-(5-chloropyrazin-2-yl)-N-methyl ethanesulfonamide (SM-9: 195 mg, 25.5percent).1H NMR (400 MHz, CHLOROFORM-d) ppm 1.32 (t, J=7.43 Hz, 3 H), 3.26 (q, J=7.30 Hz, 2 H), 3.42 (s, 3 H), 8.32 (d, J=1.37 Hz, 1 H), 8.56 (d, J=1.17 Hz, 1 H). MS (M+1 ) 236.0.
Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 19745-07-4.
Reference:
Patent; PFIZER INC.; CORBETT, Jeffrey Wayne; GUZMAN-PEREZ, Angel; PFEFFERKORN, Jeffrey Allen; TU, Meihua Mike; WO2010/103438; (2010); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem