Synthetic Route of 84905-80-6, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.84905-80-6, name is 4-Chloro-5H-pyrrolo[3,2-d]pyrimidine, molecular formula is C6H4ClN3, molecular weight is 153.57, as common compound, the synthetic route is as follows.
Example 171 Production of N-{3-chloro-4-[3-(trifluoromethyl)phenoxy]phenyl}-5-[2-(2-methoxyethoxy)ethyl]-5H-pyrrolo[3,2-d]pyrimidin-4-amine hydrochloride 4-Chloro-5H-pyrrolo[3,2-d]pyrimidine (500 mg) was dissolved in N,N-dimethylformamide (10 mL), and potassium carbonate (830 mg) and 2-(2-methoxyethoxy)ethyl 4-methylbenzenesulfonate (920 mg) were added and the mixture was stirred at room temperature for 12 hrs. Saturated aqueous sodium hydrogen carbonate was added to the reaction mixture under ice-cooling, and the mixture was extracted with ethyl acetate. The organic layer was dried over magnesium sulfate and concentrated. The residue was purified by silica gel column chromatography (eluent, hexane:ethyl acetate=50:50 ? 0:100). The obtained oil was dissolved in isopropyl alcohol (10 mL), and 3-chloro-4-[3-(trifluoromethyl)phenoxy]aniline was added. The mixture was stirred at 90C for 4 hrs, saturated aqueous sodium hydrogen carbonate was added to the reaction mixture under ice-cooling, and the mixture was extracted with ethyl acetate. The extract was dried over magnesium sulfate and concentrated. The residue was separated and purified by silica gel column chromatography (eluent, ethyl acetate_methanol=100:0 ? ethyl acetate_methanol=90:10), and crystallized from 4N hydrochloric acid-ethyl acetate solution/hexane to give the title compound (277 mg). 1H-NMR(DMSO-d6) delta: 3.06 (3H, s), 3.33 – 3.35 (2H, m), 3.55 – 3.61 (2H, m), 3.83 – 3.86 (2H, m), 4.83 – 4.86 (2H, m), 6.71 (1H, d, J= 3 Hz), 7.24 – 7.72 (7H, m), 7.99 – 8.04 (2H, m), 8.77 (1H, s), 9.92 (1H, s).
Statistics shows that 84905-80-6 is playing an increasingly important role. we look forward to future research findings about 4-Chloro-5H-pyrrolo[3,2-d]pyrimidine.
Reference:
Patent; Takeda Pharmaceutical Company Limited; EP1752457; (2007); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia