A team led by chemist Frank Glorius, a professor at the Institute of Organic Chemistry at the University of Münster, has developed a new light-driven reaction sequence. In this triple catalysis, one reaction step triggers the next like three dominoes in a row, toppling one after the other. The molecular transformations occur sequentially in a single reaction vessel. Such one-pot synthesis is considered an ideal process because it is particularly resource- and energy-efficient.