Frustrated Lewis Pair Route to Hydrodesilylation of Silylphosphines Katsuhiko Takeuchi Lindsay J. Hounjet Douglas W. Stephan 10.1021/om4007278.s002 https://acs.figshare.com/articles/dataset/Frustrated_Lewis_Pair_Route_to_Hydrodesilylation_of_Silylphosphines/2384005 A 1:1 mixture of P­(SiMe<sub>3</sub>)<sub>3</sub> and B­(<i>p</i>-C<sub>6</sub>F<sub>4</sub>H)<sub>3</sub> reacts with 3 equiv of 4-heptanone to afford a 1:2 mixture of [(Me<sub>3</sub>SiO)­(<i>n</i>-Pr)<sub>2</sub>C]­H<sub>2</sub>P–B­(<i>p</i>-C<sub>6</sub>F<sub>4</sub>H)<sub>3</sub> and the silyl enol ether, 4-trimethylsiloxy-3-heptene. Subsequent thermolysis of the adduct produces H<sub>3</sub>P–B­(<i>p</i>-C<sub>6</sub>F<sub>4</sub>H)<sub>3</sub> and an additional equiv of silyl enol ether. In the presence of a catalytic quantity of B­(<i>p</i>-C<sub>6</sub>F<sub>4</sub>H)<sub>3</sub>, however, P­(SiMe<sub>3</sub>)<sub>3</sub> reacts with 4-heptanone to produce a 1:1 mixture of [(Me<sub>3</sub>SiO)­(<i>n</i>-Pr)<sub>2</sub>C]<sub>2</sub>PH and silyl enol ether. Heating this mixture further produces [(Me<sub>3</sub>SiO)­(<i>n</i>-Pr)<sub>2</sub>C]­PH<sub>2</sub>, which is eventually converted to elemental phosphorus. 2013-08-26 00:00:00 H 3P heptanone silyl enol ether mixture Frustrated Lewis Pair Route 3SiO 3 equiv