Final answer:
Products with low solubility in water, like benzoin or hydrobenzoin isomers formed from reactions with benzene derivatives, will remain in the solution after it is cooled. They are isolated using techniques like square-tip pipette filtration and recrystallization.
Step-by-step explanation:
The question pertains to the solubility of products formed in a reaction involving benzene or its derivatives. During the synthesis process, if a product such as benzoin or a hydrobenzoin stereoisomer is formed, it will likely have very low solubility in cold water.
After the solution containing the reaction products is cooled, these substances will remain undissolved. Isolating the product can then be achieved by removing the solvent with methods like square-tip pipette filtration. Recrystallization from solvents like dichloromethane (DCM), as described in the synthesis of benzylidene-2,2-bis(oxymethyl)propionic acid, is used to further purify these types of organic compounds. The reaction discussed hints at organic synthesis involving benzaldehyde, and the procedures may relate to the formation of an aromatic compound, which typically undergo substitution reactions rather than additions due to the stabilization provided by the resonant structure of the benzene ring.