The following three synthetic methods give spectroscopically identical mixtures of 3 and 4, differing only in the ratio of the two products. In the glovebox, [PPN][HNEt 3 ][1] (0.75 g, 0.72 mmol) was dissolved in acetonitrile (5 mL). To this solution was added a solution of DABCO (0.49 g, 4.3 mmol) in acetonitrile (5 mL). The resulting solution was allowed to stand overnight, whereupon colorless crystals precipitated. The supernatant solution was then decanted off, and the crystals were rinsed with acetonitrile (3 × 3 mL). The crystals were then dried under vacuum yielding the product, a mixture of 3 and 4 as a white, crystalline solid (0.13 g). Proton NMR integration gives a 1.7:1 ratio of 3 to 4. In the glovebox, [PPN] (0.28 g, 0.15 mmol) and DABCO (0.10 g, 0.90 mmol) were dissolved in acetonitrile (5 mL). To this stirring solution was added a solution of TsCl (0.056 g, 0.30 mmol) in acetonitrile (2 mL). The resulting solution was allowed to stand overnight, whereupon colorless crystals precipitated. The supernatant solution was then decanted off, and the crystals were rinsed with acetonitrile (3 × 3 mL). The crystals were then dried under vacuum yielding the product, a mixture of 3 and 4 as a white, crystalline solid (0.048 g). Proton NMR integration gives a 1.4:1 ratio of 3 to 4.