Synthetic Route of 6331-71-1, These common heterocyclic compound, 6331-71-1, name is 4-Amino-N,N-dimethylbenzamide, 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.
Under argon, 200 mg (0.43 mmol) OF5- [ (3, 3-DIMETHYLBUTANOYL) AMINO]-L- (2-FLUORO- BENZYL)-LH-INDOLE-2-CARBOXYLIC acid (Example XXXIX) are dissolved in 2 ml of DMF, and 4 ml of pyridine are added. 489.2 mg (1.29 mmol) OF HATU are added to this solution, 140.8 mg (0.86 mmol) of 4-amino-N, N-dimethylbenzamide are then slowly added dropwise and the reaction mixture is stirred at RT overnight. For work- up, water is added and the mixture is extracted repeatedly with ethyl acetate. The combined organic phases are dried over sodium sulphate and filtered, and the solvent is removed under reduced pressure. The residue is purified by preparative HPLC. This gives 47.4 mg (15% OF THEORY) of product. HPLC (SYA-HPPSK2) : Rt = 4.69 min. MS (ESIpos): M/Z = 529 (M+H) +. 1H-NMR (400 MHz, DMSO-d6) : delta = 1.04 (s, 9H), 2.19 (s, 2H), 2.96 (s, 6H), 5.90 (s, 2H), 6.60 (t, 1H), 7.19 (t, 1H), 7.25 (q, 1H), 7.27-7. 50 (m, 3H), 7.79 (d, 2H), 7.81 (s, 1H), 8.10 (s, 1H), 9.75 (s, 1H), 10.51 (d, 1H).
The synthetic route of 6331-71-1 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; BAYER HEALTHCARE AG; WO2004/56768; (2004); A2;,
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