Process for producing a trifluoro-3-buten-2-one compound

Details Process for producing a trifluoro-3-buten-2-one compound Process for producing a trifluoro-3-buten-2-one compound

C - Chemistry, Metallurgy

07

C

C07C 221/00 (2006.01) C07C 45/70 (2006.01) C07C 49/227 (2006.01) C07C 225/14 (2006.01)

Patent

CA 2562216

A process for producing a 4-alkoxy-1,1,1- trifluoro-3-buten-2-one of the formula (III): CF3CO-CH=CH-OR1 ~(III) wherein R1 is an alkyl group, or 4-amino-1,1,1- trifluoro-3-buten-2-one of the formula (IV): CF3-CO-CH=CH-NH2 ~(IV) which comprises (i) a first step of reacting a halide of the formula (I): CF3COHal~ (I) wherein Hal is a halogen atom, with a compound of the formula (II): CH2=CHOR1 ~(II) wherein R1 is as defined above, in the presence of a base to obtain the 4-alkoxy-1,1,1-trifluoro-3-buten-2-one and if required, further reacting this compound with ammonia to obtain 4-amino-1,1,1-trifluoro-3-buten-2-one.

Procédé de production d'un 4-alkoxy-1,1,1- trifluoro-3-buten-2-one de la formule (III) : CF3CO-CH=CH-OR1 ~(III) dans laqeulle R1 désigne un groupe alkyle ou 4-amino-1,1,1- trifluoro-3-buten-2-one de la formule (IV) : CF3-CO-CH=CH-NH2 ~(IV) qui comprend (i) une première étape de réaction d'un haloïde de la formule (I): CF3COHal~ (I) dans laquelle Hal désigne un atome d'halogène, avec un composé de la formule (II) : CH2=CHOR1 ~(II) dans laquelle R1 est tel que défini précédemment, en présence d'une base pour obtenir du 4-alkoxy-1,1,1-trifluoro-3-buten-2-one et, au besoin, poursuivre la réaction de ce composé avec de l'ammoniac pour obtenir du 4-amino-1,1,1-trifluoro-3-buten-2-one.

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