Synthesis of Substituted 2-Decalones from 1-Acetylcyclohexenes and α-Trimethylsilyl α,β-Unsaturated Carbonyl Compounds by Two-Fold Michael Reactions. Synthesis of (±)-Khusitone
The kinetic enolates of 1-acetyl cyclohexenes undergo two-fold Michael reaction with α,-trimethylsilyl α,β-unsaturated carbonyl compounds to produce 5-substituted 2-decalones. The application of this reaction has enabled a synthesis of (±)-khusitone.
Lewis acid assisted annelation of trimethylsilyl enol ethers of 1-acetylcyclohexenes with α,β-unsaturated carbonyl compounds to give substituted 2-decalones; synthesis of (±)-ε-cadinene
The trimethylsilylenolethers of 1-acetylcyclohexenes undergo a Lewis-acid-assisted one-pot annelation reaction with α,β-unsaturatedcarbonylcompounds to produce 5-substituted 2-decalones; the application of this reaction has enabled a synthesis of (±)-ε-cadinene (12).