Synthetic Route of 1124-16-9, These common heterocyclic compound, 1124-16-9, name is 5-Amino-1-isopropyl-3-methylpyrazole, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
2-[(5-Chloro-2-{[3-methyl- 1 -(1 -methylethyl)- 1 H-pyrazol-5-yllami no)-4-pyridi nyl)aminol-N( methyloxy)benzamideA microwave tube was charged with 2-[(2,5-dichloro-4-pyridinyl)amino]-N- (methyloxy)benzamide (70 mg, 0.224 mmol), {3-methyl-1-(1-methylethyl)-1H-pyrazol-5- amine (70 mg, 0.503 mmol) and cesium carbonate (230 mg, 0.706 mmol). The reactionmixture was degassed with nitrogen for 10 mm. At same time, BINAP (50 mg, 0.080 mmol) and palladium(ll) acetate (10 mg, 0.045 mmol) were added. The reaction mixture was heated in a microwave at 160 C for 40 mm. The crude material was purified on reverse-phase HPLC (Gilson) eluting with CH3CNH20 with 0.1% formic acid which gave a title compound (15mg, 15%); MS: M(C20H23C1N602) = 414.89, (M+H) = 415, 416; 1H NMR(400 MHz, CHLOROFORM-d) 6 ppm 9.42 (br. s., 1 H) 8.71 (br. s., 1 H) 8.02 (s, 1 H) 7.54 (br. s., 1H) 7.06 (t, J=7.5 Hz, 1 H) 6.48 (s, 1 H) 6.32 (br. s., 1 H) 5.86 (s, 1 H) 4.47 (dt, J=13.4, 6.7 Hz, 1 H) 3.92 (s, 3 H) 2.26 (s, 3 H) 1.41 – 1.43 (d, J = 6.6 Hz, 2H).
The synthetic route of 1124-16-9 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; GLAXOSMITHKLINE LLC; AUGER, Kurt, R.; DAR, Mohammed, M.; FLEMING, Ronald, A.; WO2013/3575; (2013); A1;,
Pyrazole – Wikipedia,
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