The method of brominating trans-cinnamic acid
Now there is trans-cinnamic acid, and it is necessary to bromide it. The method is as follows:

Prepare various substances first, trans-cinnamic acid is appropriate, bromine is taken as needed, and an appropriate solvent, such as an organic solvent, is prepared to help the reaction go smoothly.

In a clean container, pour trans-cinnamic acid into it, and slowly pour bromine into it, during which you must observe the reaction situation. Because bromine is highly corrosive, you must be careful. The addition of solvent can make the reactants mix evenly and promote the rate of reaction.

When reacting, control its temperature and use a suitable temperature to stabilize the reaction. If there is a heat production, it should be dispersed in a suitable way to avoid excessive temperature and side reactions.

After the reaction is completed, the product of the reaction can be obtained by means of analysis, filtration, etc. The product or impurities can be purified by recrystallization.

In this way, the product of brominated trans-cinnamic acid can be obtained for subsequent use.