Synthetic Route of 35265-83-9, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 35265-83-9, name is 2,4-Dichloro-7-methylthieno[3,2-d]pyrimidine, molecular formula is C7H4Cl2N2S, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.
Reference Example 23 4-Diallylamino-2-chloro-7-methylthieno[3,2-d]pyrimidine In DMF was dissolved 1.50 g (6.8 mmol) of 2,4-dichloro-7-methylthieno[3,2-d]pyrimidine, and then 1.56 g (16.1 mmol) of diallylamine 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= 1:15) to give 1.17 g (yield: 61.1%) of the title compound. NMR (delta, CDCl3): 2.41 (3H, s), 4.38 (4H, d, J=5 Hz), 5.19-5.26 (4H, m), 5.87-6.00 (2H, m), 7.38 (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