In the glovebox, 5 (0.16 g, 0.52 mmol) was suspended in dichloromethane (4 mL). To this stirring suspension was added diethylamine (0.23 g, 3.1 mmol) in dichloromethane (2 mL). The resulting suspension was stirred for 5 min, resulting in dissolution of all the starting material. Volatiles were then evaporated under reduced pressure, leaving a waxy, yellow solid. Rinsing this solid material with cold acetonitrile (3 × 3 mL) removed soluble impurities, leaving a white solid. The resulting solid was dried under vacuum, giving the product as a white powder (0.18 g, 0.40 mmol, 77% yield). In the glovebox, 5 (0.11 g, 0.36 mmol) was suspended in dichloromethane (5 mL) in a Schlenk flask. The flask was then removed from the glovebox and attached to a Schlenk line. Against a flow of nitrogen, methanol (0.74 mL, 18.2 mmol) was added by syringe all at once. The mixture was stirred for 15 min and then filtered to remove insoluble material. Removing volatiles under reduced pressure left a colorless oil (0.066 g, 2:1 ratio of 8 to 9 by 1 H NMR integration). In the glovebox, 5 (0.027, 0.089 mmol) was suspended in acetonitrile (1 mL). To this stirring suspension was added a 0.10 g/mL solution of (TBA) 2 pA in acetonitrile (0.74 mL, 0.089 mmol). After stirring for 5 min, all of the solid material had dissolved. 31 P{ 1 H} NMR of the resulting solution shows formation of 10 with only minor impurities.