Organic reaction refers to the chemical transformation that involves organic compounds. There are several synonyms for organic reaction that you can use to add variety to your writings. For example, instead of using the term organic reaction, you can use the phrase chemical change, which refers to the process of breaking and forming chemical bonds in a substance. Another synonym for organic reaction is chemical reaction, which means the interaction of different molecules that results in a chemical change. Additionally, you can use the term organic synthesis, which refers to the process of creating new organic compounds. Using synonyms for the word "organic reaction" can help to make your writing more varied and professional.