Described herein are three methods for making halogenated fluorinated ether-containing compounds using a fluorinated olefin or hexafluoropropylene oxide.

The present invention relates to a process for manufacturing haloacetamides of formula (I), ##STR00001##
comprising sub-step (a): reacting halones of formula (II) with oleum; followed by sub-step (b): reacting the reaction mixture obtained in sub-step (a) with an amine of formula (IV) optionally in the presence of a base;
wherein the variables are defined according to the description.

The present invention relates to a process for manufacturing haloacetamides of formula (I), ##STR00001##
comprising sub-step (a): reacting halones of formula (II) with oleum; followed by sub-step (b): reacting the reaction mixture obtained in sub-step (a) with an amine of formula (IV) optionally in the presence of a base;
wherein the variables are defined according to the description.

The present invention relates to a process for manufacturing haloacetamides of formula (I), ##STR00001##
comprising sub-step (a): reacting halones of formula (II) with oleum; followed by sub-step (b): reacting the reaction mixture obtained in sub-step (a) with an amine of formula (IV) optionally in the presence of a base;
wherein the variables are defined according to the description.

An object is to provide a method of producing a carboxylic acid fluoride at an increased product yield in a reaction system without forming HCl as a by-product, in other words, without forming a complex between HCl and a carboxylic acid fluoride as a product. The method comprising reacting a carboxylic acid chloride with a metal fluoride. In this production method, the carboxylic acid is a carboxylic acid having a carbon number of 1 to 7, the carboxylic acid is a carboxylic acid substituted with fluorine, or the carboxylic acid is trifluoroacetic acid.

An object is to provide a method of producing a carboxylic acid fluoride at an increased product yield in a reaction system without forming HCl as a by-product, in other words, without forming a complex between HCl and a carboxylic acid fluoride as a product. The method comprising reacting a carboxylic acid chloride with a metal fluoride. In this production method, the carboxylic acid is a carboxylic acid having a carbon number of 1 to 7, the carboxylic acid is a carboxylic acid substituted with fluorine, or the carboxylic acid is trifluoroacetic acid.