Ying Li
Abstract
The proper conditions are given in the process of 4 bromo 1 bromomethy1 benzene by brominating 4 bromo toluene with bromine:the rate of 4 bromo 1 bromomethy1 benzene and bromine is 1:0.95,the temperarure is 98℃～102℃.The crude product is washed and recrystallized by mixed solvent.Thus the purity is 99.3%,the yield is about 60%.
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The proper conditions are given in the process of 4 bromo 1 bromomethy1 benzene by brominating 4 bromo toluene with bromine:the rate of 4 bromo 1 bromomethy1 benzene and bromine is 1:0.95,the temperarure is 98℃～102℃.The crude product is washed and recrystallized by mixed solvent.Thus the purity is 99.3%,the yield is about 60%.
Key concepts: Bromine, Benzene, Toluene, Yield (engineering), Chemistry, Solvent, Organic chemistry, Benzene derivatives