Silicon compounds Peterson olefination

The Peterson olefination can be viewed as a silicon variant of the Wittig reaction, the well-known method for the formation of carbon-carbon double bonds. A ketone or aldehyde 1 can react with an a-silyl organometallic compound 2—e.g. with M = Li or Mg—to yield an alkene 3. 

Silicon-stabilized anions can be put to various uses, among which is the formation of olefins (Peterson reaction), and the 1-phenylthio-l-trimethylsilyl-alkanes required as precursors can also be used in a synthesis of aldehydes. Some of the chemistry reported this year relating to such compounds is shown in Schemes 20 and 21. ... 

---