GB893302A - Aromatic acyl chlorides - Google Patents

Aromatic acyl chlorides

Info

Publication number
GB893302A
GB893302A GB19561/60A GB1956160A GB893302A GB 893302 A GB893302 A GB 893302A GB 19561/60 A GB19561/60 A GB 19561/60A GB 1956160 A GB1956160 A GB 1956160A GB 893302 A GB893302 A GB 893302A
Authority
GB
United Kingdom
Prior art keywords
chlorination
chlorine
product
acid
chloride
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB19561/60A
Inventor
Ewald Katzschmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemische Werke Witten GmbH
Original Assignee
Chemische Werke Witten GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chemische Werke Witten GmbH filed Critical Chemische Werke Witten GmbH
Publication of GB893302A publication Critical patent/GB893302A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/58—Preparation of carboxylic acid halides
    • C07C51/60—Preparation of carboxylic acid halides by conversion of carboxylic acids or their anhydrides or esters, lactones, salts into halides with the same carboxylic acid part
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
    • C07C51/363—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by introduction of halogen; by substitution of halogen atoms by other halogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/58—Preparation of carboxylic acid halides
    • C07C51/62—Preparation of carboxylic acid halides by reactions not involving the carboxylic acid halide group

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The chlorides of aromatic carboxylic acids, substituted in the nucleus by chlorine, are made by treating with chlorine an ester of an aromatic mono- or poly-carboxylic acid while it is exposed to light whereby the corresponding acid chloride is obtained, then introducing a catalyst, such as iron filings or ferric chloride, and continuing the chlorination to produce the desired nuclear chloro-substituted compound. In Example 1, dichloroterephthaloyl dichloride is obtained by chlorinating dimethylterephthalate, the first stage of chlorine-treatment being carried out at 160 DEG C.-195 DEG C., and the second at 220 DEG C. When hydrolysed, the product yields dichloroterephthalic acid. Example 3 also describes the chlorination of dimethyl terephthalate, but in this example, the product is tetrachloroterephthaloyl dichloride. In Example 4, dimethyl terephthalate is chlorinated, and the product is refluxed with methanol whereby the dimethyl ester of tetrachloro-terephthalic acid is obtained. Example 2 describes the production of pentachlorobenzoyl chloride by chlorination of methyl benzoate.
GB19561/60A 1959-06-27 1960-06-02 Aromatic acyl chlorides Expired GB893302A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE893302X 1959-06-27

Publications (1)

Publication Number Publication Date
GB893302A true GB893302A (en) 1962-04-04

Family

ID=6846665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19561/60A Expired GB893302A (en) 1959-06-27 1960-06-02 Aromatic acyl chlorides

Country Status (1)

Country Link
GB (1) GB893302A (en)

Similar Documents

Publication Publication Date Title
GB1041695A (en) Process for the preparation of aromatic carboxylic acids
NO891784L (en) PROCEDURE FOR THE PREPARATION OF IRON (III) CHLORIDE FROM DINNED HYDROCHLIC ACID.
GB548486A (en) Chlorination of polyvinyl chloride
GB893302A (en) Aromatic acyl chlorides
GB1026290A (en) Aromatic fluorine compounds
GB651528A (en) Chlorinated indan derivatives and process for making same
GB998648A (en) Process for the preparation of vinyl esters
GB1023176A (en) Process for the preparation of acrylic acid esters
GB583634A (en) Production of chlorinated hydrocarbons
GB928178A (en) Method for the manufacture of monochloracetic acid by chlorinating acetic acid
GB813888A (en) Method of producing the chlorides of aromatic mono- or polycarboxylic acids
GB884114A (en) A process for the preparation of ºg-monochloro-methyl-benzoic acid
GB1012986A (en) Process for the manufacture of 4,5-dichloro- and 4,5-dibromo-naphthalene-1,8-dicarboxylic acids and their anhydrides
GB928573A (en) Derivatives of thiadiazole dicarboxylic acid
ES286512A1 (en) Procedure for the preparation of thereftalic acid dichloride and isoftalic acid dichloride (Machine-translation by Google Translate, not legally binding)
GB892584A (en) Improvements in and relating to the production of alpha.alpha-dichloropropionic acid
ES257944A1 (en) Procedure for the preparation of acids or free esters (Machine-translation by Google Translate, not legally binding)
GB644071A (en) Method of preparing phthaloyl chlorides
GB858129A (en) Manufacture of 2,2,3,3-tetrachloro-1,4-butanediol
GB831051A (en) Improvements in or relating to production of polychlorobenzene compounds
GB909086A (en) Improvements in or relating to the production of organic carboxylic acid chlorides
GB773131A (en) Improvements in and relating to the preparation of esters of chloromethyl benzoic acids
GB950620A (en) Improvements in or relating to dimethyl 2,3,5,6-tetrachloroterephthalate
GB819684A (en) Fireproof unsaturated polyester resins
AT250302B (en) Circulation process for the production of chlorine by oxidation of gaseous or aqueous hydrochloric acid