Related Products of 74901-69-2 , The common heterocyclic compound, 74901-69-2, name is 2,4-Dichloro-6,7-dihydrothieno[3,2-d]pyrimidine, molecular formula is C6H4Cl2N2S, 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.
12.1 (2-chloro-6,7-dihydrothieno[3,2-d]pyrimidin-4-yl)-(3-fluorophenyl)-amine (III-7) 4 g (II) are placed in 15 ml dimethylformamide, then 4.5 ml diisopropylethylamine are added followed by 2.5 ml 3-fluorophenylamine. The reaction mixture is heated to 120 C. until there is no further reaction then cooled and evaporated down. The residue is mixed with water. The product is extracted with dichloromethane and purified by chromatography (silica gel, petroleum ether/ethyl acetate 80/20 to 60/40). 2.6 g (III-7) are obtained in the form of a solid. Analytical HPLC (method A): RT=3.27 min
The synthetic route of 74901-69-2 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; US2012/35143; (2012); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia