643734-80-9Relevant academic research and scientific papers
Efficient rhodium-catalyzed asymmetric hydrogenation for the synthesis of a new class of N-aryl β-amino acid derivatives
Dai, Qian,Yang, Weiran,Zhang, Xumu
, p. 5343 - 5345 (2005)
(Chemical Equation Presented) N-Aryl β-amino esters were obtained by asymmetric hydrogenation of a new class of N-aryl β-enamino esters. High conversions and up to 96.3% ee values were achieved with a Rh-TangPhos catalyst.
Chemoselectivity in the reactions between ethyl 4,4,4-trifluoro-3-oxobutanoate and anilines: Improved synthesis of 2-trifluoromethyl-4- and 4-trifluoromethyl-2-quinolinones
Berbasov, Dmitrii O.,Soloshonok, Vadim A.
, p. 2005 - 2010 (2007/10/03)
Chemoselectivity in the reactions between ethyl 4,4, 4-trifluoroacetoacetate (ethyl 4,4,4-trifluoro-3-oxobutanoate) and various anilines was systematically studied as a function of the reaction conditions used (solvent/temperature, catalyst). The results obtained allowed chemoselective (>90%) synthesis of the corresponding ethyl 3-arylamino-4,4,4-trifluorobut-2-enoates and N-aryl-4,4,4-trifluoro-3-oxobutyramides, which were cyclized to afford 2-trifluoromethyl-4-quinolinones and 4-trifluoromethyl-2-quinolinones, respectively.
