Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 15598-33-1, name is 4,6-Dichloro-5-fluoropyrimidin-2-amine. This compound has unique chemical properties. The synthetic route is as follows. COA of Formula: C4H2Cl2FN3
C. Preparation of 5-Fluoro-6-chloro-2,4-pyrimidinediamine (5) 5-Fluoro-4,6-dichloro-2-pyrimidineamine (4) (204 mg, 1 mmol) and ammonium hydroxide (15 ml) were charged to a sealed tube and ethanol (1.5 ml) added. The tube was heated at 100 C. for 24 hours. The solution was concentrated. The residue was absorbed on silica gel and chromatographed (elution with ethyl acetate), yielding (5) as a white powder (118 mg, 65%): MS (70 eV, EI) m/z (relative intensity) 162 (M+, 100), 43 (92), 164 (33), 127 (29), 135 (16). Exact Mass Calcd for C4 H4 N4 ClF: 162.0108. Found: 162.0100.
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Reference:
Patent; The Upjohn Company; US5373012; (1994); A;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia