470467-32-4

Upstream product

• 25310-92-3 propiophenone dimethyl acetal 
• 76-02-8 trifluoroacetyl chloride 

Downstream Products

• 27772-89-0 2,4-dimethyl-5-phenyl-isoxazol-3-one 

Relevant academic research and scientific papers

Synthesis and structure of novel 1-aryl-4,4,4-trichloro-1,3-butanediones

Novel 1-aryl-4,4,4-trichloro-1,3-butanediones in good yields (80-97%) were synthesized in one pot through acetal acylation with trichloroacetyl chloride followed by acid hydrolysis. Structures of all compounds were elucidated by elemental analysis, mass spectrometry, and 1H/13C nuclear magnetic resonance (NMR) measurements. The 1H/13C NMR data showed that trichloromethyl-β-diketones 2a-k in solution are predominantly ketoenol. However, the spectroscopic data from 4,4,4-trichloro-2-methyl- 1-phenyl-1,3-butabedione (2l) with methyl substituent between carbonyls showed a bias toward the diketo form in solution. X-ray diffraction of monocrystals from 2g and 2i showed that these compounds are cis-ketoenol tautomers. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communcations1 to view the free supplemental file. Taylor & Francis Group, LLC.

Synthesis and structure of new trichloromethyl-β-diketones - 5-Trichloromethylisoxazole and 5-isoxazolecarboxylic acid derivatives

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 NMR study showed that β-dicarbonyl compounds 2b and 2d-2h are predominantly in the keto form and 2a and 2c are in the enol form. The trichloromethyl-β-diketones react with hydroxylamine hydrochloride leading to three sets of isoxazole derivatives.