Fig. 4From: Application of α-bromination reaction on acetophenone derivatives in experimental teaching: a chemical innovation experiment engaging junior undergraduatesEffects of reaction time (A) and temperature (B) on bromination of 4-trifluoromethylacetophenone monitored by TLC. S represents starting material (4-trifluoromethylacetophenone), U represents unpurified product, and M represents their mixtureBack to article page