A simple, highlyenantioselective catalytic route to cyclopentanones is presented. The chiral amine catalyzed domino Michael/α-alkylation reaction gives access to functionalized cyclopentanones in good to high yields with 93 → 99% ee. The products were also reduced with high diastereoselectivity to the corresponding cyclopentanols.
development of one-pot organocatalytic dominoMichael/alpha-alkylation reactions between bromomalonates or bromoacetoacetate esters and alpha,beta-unsaturated aldehydes is presented. The chiral-amine-catalyzed reactions with bromomalonates as substrates give access to the corresponding 2-formylcyclopropane derivatives in high yields with excellent diastereoselectivity and up to 99 % ee. The catalytic domino