Adding a certain compound to certain chemical reactions, such as: 1481-63-6, name is 1-Bromo-2,4-dichloro-5-fluorobenzene, belongs to chlorides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 1481-63-6, COA of Formula: C6H2BrCl2F
EXAMPLE In a 500 ml three-necked flask equipped with reflux condenser and vane stirrer, 243.89 g (1 mol) of 5-bromo-2,4-dichlorofluorobenzene, 80.61 g (0.9 mol) of copper(I) cyanide and 70 g (0.81 mol) of dimethylacetamide are initially introduced into the reaction vessel and heated to 150 C. The reaction suspension is maintained for a further 4 to 5 hours at this temperature with vigorous stirring. Subsequently, it is cooled to 40 C. to 50 C. and the precipitated salts are filtered off by suction. The filter cake is washed 3 times each with 50 ml of methylene chloride and the combined organic phases are fractionally distilled together with the mother liquor. In addition to 39.0 g of 5-bromo-2,4-dichlorofluorobenzene, 127.6 g (80.1%) of 2,4-dichloro-5-fluorobenzonitrile are obtained, relative to reacted 5-bromo-2,4-dichlorofluorobenzene, having a purity (GC) >98%.
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Reference:
Patent; Hoechst Aktiengesellschaft; US5187295; (1993); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics