The life cycle inventory (LCI) data for the Ni foam method was collected from combining the 0.154 g scale reaction of 2-cylohexenone 1b and the recyclability study (vide infra). The data for the Pd/C method was obtained from 1 g scale reactions of p-hydroxybenzylidene acetone (1a) and 1b (vide infra). In the baseline scenario, an electricity grid mix for Sweden was used. In a theoretical future scenario grid mix for 2030 was modelled. Statistics from the International Energy Agency from 2018 was used to obtain electricity grid data for Sweden. The system description of both methods can be found in the Supporting Information (Section S4.1).