An improved method for the synthesis of a new series of trichloromethyl-β-diketones including 1, 1, 1-trichloropentan-2, 4-dione (2a), 1, 1, 1-trichloro-3-methylhexan-2, 4-dione (2b), 4, 4, 4-trichloro-1-phenylbutan-1, 3-dione (2c), 4, 4, 4-trichloro-2-methyl-1-phenylbutan- 1, 3-dione (2d), 2-trichloroacetylcyclohexanone (2e), 4-tert-butylcyclohexanone (2f), 4-tert- butylcycloheptanone (2g), and 4-tert-butylcyclooctanone (2h) is reported. A multinuclear ...