Flash vacuum thermolysis of β-keto-trimethylsilyl-enol-ethers: Synthesis of allenic and furanic derivatives

Abstract Thermolysis at 800° of a series of β-keto-trimethylsilyl-enol-ethers allows the elimination of a trimethylsilanol molecule through a 1,5 rearrangement. The reaction products are furanic derivatives, which are obtained in often good yields through an allenic intermediate, which has been isolated.