At the age of a certain year, Yu heard an alien saying about the reaction of iodobenzene in the market. He said: "Iodobenzene is an important substance in organic synthesis. In various reactions, it is often the starting material."

It is said that it meets magnesium powder, and in the state of anhydrous ether, Grignard's reagent can be produced. This reagent has extraordinary activity and can be nucleophilically added to many carbonyl compounds. When it encounters aldehyde, it is a secondary alcohol; when it encounters ketone, it is a tertiary alcohol. Its process is exquisite, like the meticulous work of creation, outlining the change of the carbon chain and imparting new properties.

It is also heard that iodobenzene and olefins can react by coupling under the catalysis of palladium. It is like threads threading through beads, connecting different carbon chains to build a complex structure. This reaction condition is mild and the selectivity is quite good. It has outstanding achievements in drug synthesis, material creation and other fields.

After hearing it, I yearn for it, feeling the magic of organic chemistry and the unpredictable changes in the reaction. Then I dedicated myself to studying, hoping to be able to learn a thing or two about the way of iodine-benzene reaction, and to create new things for future creations.