It would be beneficial to have a database of coupled tandem reactions for scientists to use as a reference when constructing complicated integrated catalytic systems. When possible, the catalytic reactions involved, the spatiotemporal control methods and reaction conditions employed, and how the activity and selectivity of the overall reaction compared to the isolated stepwise reactions should be deposited. A database of the resulting products would also be informative. In the case of polymerization reactions, for example, many copolymers are synthesized using tandem polymerization reactions, and while there are databases listing the structures and properties of polymers, such as PolyInfo 133 , Polymer Property Predictor and Database 134 , and CAMPUS 135 , these databases are far from comprehensive in summarizing the structures and corresponding properties of the various copolymers produced and reported. If this information could be benchmarked and centralized, it could provide guidance for future polymer design and retrosynthesis.