Electric Literature of 35265-83-9, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 35265-83-9, name is 2,4-Dichloro-7-methylthieno[3,2-d]pyrimidine. This compound has unique chemical properties. The synthetic route is as follows.
Reference Example 26 2-Chloro-4-ethylamino-7-methylthieno[3,2-d]pyrimidine In DMF was dissolved 700 mg (3.2 mmol) of 2,4-dichloro-7-methylthieno[3,2-d]pyrimidine, and then an aqueous solution of 338 mg (7.5 mmol) of ethylamine was added dropwise to the resulting solution under ice cooling over 5 minutes. The reaction mixture was stirred at 0 C. for one hour and then allowed to resume room temperature, followed by stirring for one hour. After completion of the reaction, ice water was added to the reaction mixture, followed by extraction with ethyl acetate (50 ml*3). After the organic layer was washed successively with 1N hydrochloric acid, water and brine and dried over anhydrous sodium sulfate, the solvent was distilled off under reduced pressure. The residue was purified by silica gel chromatography (eluent: ethyl acetate-hexane=1/6) to give 524 mg (yield: 72.0%) of the title compound. NMR (delta, CDCl3): 1.34 (3H, t, J=7 Hz), 2.42 (3H, s), 3.68-3.74 (2H, m), 4.97 (1H, br), 7.35 (1H, s)
While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 35265-83-9, 2,4-Dichloro-7-methylthieno[3,2-d]pyrimidine.
Reference:
Patent; NAKASHIMA, YOSHIHARU; FUJITA, TAKASHI; HIZUKA, MICHIYO; IKAWA, HIROSHI; HIRUMA, TORU; US2001/6969; (2001); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia