Selective reduction of the acyl group in cyclic α-acyl-β-dicarbonyl compounds with sodium cyanoborohydride.: Efficient synthesis of cyclic α-alkyl-β-dicarbonyl compounds
Efficient synthesis of cyclic alpha-alkyl-beta-dicarbonyl compounds of the cyclopentane, cyclohexane, tetronic acid, and alpha-pyrone series from the corresponding cyclic alpha-acyl-beta-dicarbonyl compounds under the action of NaBH3(CN) in a THF-HCl system is described.