Carbon-carbon bond formation promoted by transition metal carbonyls. 20. Iron carbonyl promoted reaction of .alpha.,.alpha.'-dibromo ketones and aromatic olefins leading to 3-arylcyclopentanones. The [3 + 2] cycloaddition involving an allylic cation
Carbon-carbon bond formation promoted by transition metal carbonyls. 20. Iron carbonyl promoted reaction of .alpha.,.alpha.'-dibromo ketones and aromatic olefins leading to 3-arylcyclopentanones. The [3 + 2] cycloaddition involving an allylic cation