What are some common challenges encountered when performing the Wittig reaction, and how can they be addressed?

Some common challenges encountered when performing the Wittig reaction include formation of side products, low yields, and difficulty in isolating the desired product. These challenges can be addressed by carefully selecting appropriate reagents, optimizing reaction conditions, and purifying the product through techniques such as column chromatography. Additionally, using high-purity starting materials and conducting the reaction in an inert atmosphere can help improve the overall success of the reaction.