Title:
【発明の名称】クロルカルボン酸クロリドの製法
Document Type and Number:
Japanese Patent JP2003525261
Kind Code:
A
Abstract:
The invention relates to a method for producing chlorocarboxylic acid chlorides of formula (I), wherein R<1> and R<2>, independently from one another, mean a hydrogen atom, an organic radical containing carbon, a halogen, a nitro or cyano group and Y means an alkylene chain having 1 to 10 carbon atoms in the chain which is unsubstituted or is substituted by organic radicals that contain carbon, by halogen, nitro and/or cyano groups, whereby the alkylene chain can be interrupted by an ether-, thioether-, tertiary amino- or keto group, whereby the organic radicals of Y and/or R<1> and/or R<2> can be connected to one another and thereby form a non-aromatic system, whereby said radicals contain carbon, by converting a lactone of formula (II), wherein R<1>, R<2> and Y have the aforementioned meanings, using a hydrogen chloride and phosgene in the presence of a catalyst. Hydrogen chloride is added before and/or while phosgene is added. The hydrogen chloride is only introduced at a temperature of at least 60 DEG C. A pyridine compound is used as the catalyst.
Inventors:
Armin Stamm
Heinz-Josef Knoyper
Johem Henkelman
Theodor Weber
Ralph Bush
Heinz-Josef Knoyper
Johem Henkelman
Theodor Weber
Ralph Bush
Application Number:
JP2001563459A
Publication Date:
August 26, 2003
Filing Date:
February 28, 2001
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
C07B61/00; C07C51/60; C07C55/40; C07C51/58; (IPC1-7): C07C51/58; C07C55/40
Attorney, Agent or Firm:
Toshio Yano (4 outside)