Fig. 4: Mechanistic investigations and proposed reaction pathways.
From: Selective monodeuteration enabled by bisphosphonium catalyzed ring opening processes
A Stern-Volmer quenching experiment. B Photolysis experiment. C Transient absorption spectra. D ESA decay signals in the presence of oxygen. E ESA decay signals in the presence of 1. F ESA decay signals in the presence of 1 and MeOH. G proposed photoexcitation and monodeuteration pathways.
