METHOD FOR PRODUCING FLUORINATED ALKANE, METHOD FOR SEPARATING AND RECOVERING AMIDINE BASE, AND METHOD FOR USING RECOVERED AMIDINE BASE
申请人:Kanto Denka Kogyo Co., Ltd.
公开号:US20180118642A1
公开(公告)日:2018-05-03
The present invention provides: a method for producing a fluorinated alkane represented by the formula (2): R
2
—F, wherein an alcohol having 3 to 5 carbon atoms is fluorinated by a fluorinating agent represented by the formula (1): R
1
SO
2
F in the absence of a solvent, and in the presence of a base selected from the group consisting of an amidine base and a phosphazene base; a method for separating and recovering an amidine base from an amidine base-sulfonate complex represented by the following formula (5); and a method for using a recovered amidine base. In the formula, R
1
represents a methyl group, an ethyl group or an aromatic group, R
2
represents an alkyl group having 3 to 5 carbon atoms, and n is 0 or 2.
BUTENE CONVERSION METHOD AND MONOFLUOROBUTANE PURIFICATION METHOD
申请人:ZEON CORPORATION
公开号:US20190177253A1
公开(公告)日:2019-06-13
Provided is an industrially simple and cheap method for efficiently removing butene from crude monofluorobutane containing butene without causing substantial decomposition, transformation, or the like of the monofluorobutane. In a provided monofluorobutane purification method, crude monofluorobutane containing butene is brought into contact with trihalomethane in the presence of an alkali aqueous solution to convert the butene to a compound having a higher boiling point than the monofluorobutane, water is subsequently added to a reaction mixture obtained thereby to dissolve a produced salt, an organic layer is separated, and then the separated organic layer is purified by distillation.