0} ------------------  A 000 mg portion (0.00 mmol) of **0a** was dissolved in 00 mL DME and cooled to −00 °C, and 000 mg (0.00 mmol) of KO*t*Bu was added. After it was stirred for an additional 00 min, the mixture was warmed to room temperature and finally stirred for an additional 00 h. At this time, reaction control by ^00^Si NMR showed that the dianionic species **0a** was completely formed. Subsequently, the reaction mixture was cooled to −00 °C and 000 mg (0.00 mmol) of ClSi*i*Pr~0~ was added dropwise. The red solution immediately turned yellow. After removal of the volatile components under vacuum, the remaining yellow solid was dissolved in heptane, the solution was filtered through dry Celite, and the solvent was stripped off again. Recrystallization from Et~0~O afforded 000 mg (00%) of the analytically pure 