Fig. 3. Delayed reactant labelling: (a) ESI-MS spectra recorded 2 and 28 min after adding CD3OH (time delay: 5 min) to the reaction mixture of PhCCCH3 with 1.25 mol% [Au(PPh3)Cl]/1.5 mol% AgSbF6/1.25 mol% bambusuril iPr-BU*H2SO4 in CH3OH. (b) Mutual time progression of integrated MS peak intensities of B and D3-B in the reaction mixture of PhCCCH3 with 1.25 mol% [Au(PPh3)SbF6] (in red). In addition, the reaction mixture contained 1.25 mol% iPr-BU*H2SO4 (blue) or 1.25 mol% TsOH (green). The solid lines are exponential fits (see eqn (S8–S11)†).
