A diastereospecific reaction typically occurs when a reactant has multiple chiral centers, and the reaction conditions or reagents result in the preferential formation of one set of diastereoisomers over the other set. This selectivity can be important in various chemical transformations, such as in the synthesis of complex organic molecules or natural product synthesis. Diastereospecific reactions are useful for controlling the stereochemistry of a compound and can be crucial for achieving desired properties or activities in the final product