348-59-4, These common heterocyclic compound, 348-59-4, name is 2,5-Dichlorofluorobenzene, 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.
b [3-Cyclopropyl-3-(2.5-dichlorophenoxy)propyl]methylcarbamic Acid, 1,1-dimethylethyl Ester 1,4-Dichloro-2-fluorobenzene (165 mg, 1.00 mmol) and (3-cyclopropyl-3-hydroxypropyl)methylcarbamic acid, 1,1-dimethylethyl ester (230 mg, 1.00 mmol) were dissolved in dimethylsulfoxide (10 ml) under nitrogen at room temperature. To the resulting solution was added sodium hydride (60% in oil) (80 mg, 2.00 mmol). The solution was then allowed to stir at room temperature under nitrogen for 24 h. The mixture was then poured into water and extracted with diethyl ether three times. The combined organic fractions were washed with brine and dried over magnesium sulfate. The solvent was evaporated and the residue eluted down a flash chromatography column using 10% ethyl acetate/isohexane as eluent to give 175 mg (47%) of the title compound as an oil. 1H NMR 300 MHz (CDCl3) 7.26 (1H, m), 6.96 (1H, s), 6.87 (1H, m), 3.80 (1H, q), 3.42 (2H, m), 2.84 (3H, s), 2.01 (2H, m), 1.43 (9H, s), 1.10 (1H, m), 0.54 (2H, d), 0.30 (2H, bm).
Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 348-59-4.
Reference:
Patent; Cheshire, David; Connolly, Stephen; Cox, David; US2003/65174; (2003); A1;,
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