PROCESS FOR PRODUCING A TRIFLUORO-3-BUTEN-2-ONE COMPOUND

摘要

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.