Lithiation of 2,6,6-1-[2-(1,4-Dioxenyl)]-1-Cyclohexene: An Unexpected Dioxene Ring-Cleavage
摘要:
Metalation of the title compound 1 with strong lithiating agents leads to ring-opened products. Conditions for regioselective deprotonation affording either alpha,beta-unsaturated ketone 6 or allenic product 9 are described.