Title:
【発明の名称】置換ベンゾトリクロリド類の製造法
Document Type and Number:
Japanese Patent JP2689988
Kind Code:
B2
Abstract:
A process for chlorinating a compound of the formula (I) in which R1 is a C1-alkyl radical, C1-alkoxy radical or C1-thioalkyl radical, and X1, X2, X3 and X4 are identical or different hydrogen or halogen, and X3 may alternatively be or -NCO, comprising, in an initial phase, dissolving a chlorination catalyst in the compound to be chlorinated, continuously metering this solution together with chlorine into a reaction vessel containing the compound to be chlorinated, and, after the initial phase, removing partially or fully chlorinated compounds from the reaction vessel, dissolving fresh chlorination catalyst in the removed compounds, and feeding this catalyst solution, together with chlorine, to the reaction vessel.
Inventors:
Frank Desire
Karl-Ervin Schnarke
Karl-Ervin Schnarke
Application Number:
JP22149688A
Publication Date:
December 10, 1997
Filing Date:
September 06, 1988
Export Citation:
Assignee:
Bayer Actien Gezershyaft
International Classes:
B01J31/02; C07B31/00; C07B39/00; C07B61/00; C07C17/00; C07C17/14; C07C17/20; C07C22/04; C07C22/06; C07C25/02; C07C25/13; C07C41/00; C07C41/22; C07C43/225; C07C51/363; C07C51/62; C07C63/04; C07C63/70; C07C65/21; C07C67/00; C07C241/00; C07C263/16; C07C265/12; C07C319/20; C07C323/09; C07C323/36; C07C323/62; (IPC1-7): C07B39/00; C07C17/14; C07C22/04; C07C25/02; C07C25/13; C07C41/22; C07C43/225; C07C51/363; C07C63/70; C07C263/16; C07C265/12; C07C319/20; C07C323/09
Domestic Patent References:
| JP57159729A |
Attorney, Agent or Firm:
Heiyoshi Odashima