Reference of 63558-65-6, 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. 63558-65-6, name is 4-Chloro-5-iodopyrimidine, molecular formula is C4H2ClIN2, 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.
EXAMPLE 5 Preparation of 4-chloro-5-phenylethynylpyrimidine A mixture of 2.1 g of 4-chloro-5-iodopyrimidine, 10 mL of triethylamine, 1.2 mL phenylacetylene, 80 mg copper iodide and 160 mg of dichlorobis(triphenylphosphine was stirred at room temperature for 18 hours. The mixture was diluted with dichloromethane and evaporated in vacuo. The residue was redissolved in a few mL of dichloromethane, 10 mL of triethylamine added and the mixture heated at reflux for one hour. The heterogeneous mixture was evaporated in vacuo and the residue obtained was partitioned between water and dichloromethane. A gelatinous precipitate which formed on shaking the two layers was filtered off, enabling separation of the two layers. The organic extracts were dried over sodium sulfate, filtrated and evaporated in vacuo to yield 2.5 g of a dark brown syrup. The syrup was purified by column chromatography on silica gel, twice, eluding with hexanes, 1:1 hexanes/dichloromethane, dichloromethane and finally ethyl acetate. Like fractions from dichloromethane elution were pooled, obtaining 350 mg of the product, 5-phenylethynyl-4-chloropyrimidine as an oil which solidified to white rosettes.
According to the analysis of related databases, 63558-65-6, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Beauchamp, Lilia M.; Krenitsky, Thomas A.; Kelley, James L.; US2004/87789; (2004); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia