*3.1. Materials*

Tetramethyldisiloxane (M H M H) was purchased from Gelest (Morrisville, PA, USA) and dried over molecular sieves (obtained from Sigma Aldrich (Oakville, ON, Canada), Molecular sieves, 4 Å beads, 8–12 mesh) before use. Ultrapure water (18 M Ω-cm) was obtained from Barnstead Easy pure RF (https://www.barnstead-water.com/). The B(C6F5)3 catalyst was provided by Alfa Aesar (Tewksbury, MA, USA). Toluene (Caledon, ON, Canada) was dried over an activated alumina column (2.3 ppm water present). "Wet" DCM (72.5 ppm water present) and "wet" toluene (466.6 ppm water present) were purchased from Caledon (Georgetown, ON, Canada).
