GB414570A - Manufacture of aromatic dicarboxylic acid chlorides - Google Patents
Manufacture of aromatic dicarboxylic acid chloridesInfo
- Publication number
- GB414570A GB414570A GB3558033A GB3558033A GB414570A GB 414570 A GB414570 A GB 414570A GB 3558033 A GB3558033 A GB 3558033A GB 3558033 A GB3558033 A GB 3558033A GB 414570 A GB414570 A GB 414570A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chloride
- zinc
- benzotrichloride
- yield
- phthalyl
- 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
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Phthalyl chloride and its homologues and nuclear substitution products are made by treating phthalic anhydride or a homologue or nuclear substitution product thereof with benzotrichloride, benzal chloride, or their homologues or nuclear substitution products. The reaction may be effected in the presence of a catalyst comprising an inorganic polyvalent metal salt forming an aqueous solution which is acid to litmus, e.g. chloride of zinc, aluminium, copper, chromium or iron; the catalyst may be formed in situ, e.g. from zinc oxide or zinc dust, aluminium oxide or hydroxide, or iron hydroxide. In the examples, (1) phthalic anhydride and benzotrichloride are heated to 200 DEG C. with a little zinc chloride to yield phthalyl chloride and benzoyl chloride; (2) the same reaction is effected at 110--120 DEG C. in the presence of a larger proportion of zinc chloride. Reference is made to the production of chloro- and tetrachloro-phthalyl chloride and to the use as chlorinating agents of chlorobenzotrichloride and chlorinated xylenes in which at least two atoms of a methyl group are replaced by chlorine. Reference is made also to the reactions, described in the literature, of benzotrichloride (1) with acetic acid, to yield benzoic acid and acetyl chloride, and (2) with acetic anhydride to yield acetyl chloride and benzoyl chloride.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3558033A GB414570A (en) | 1933-12-18 | 1933-12-18 | Manufacture of aromatic dicarboxylic acid chlorides |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3558033A GB414570A (en) | 1933-12-18 | 1933-12-18 | Manufacture of aromatic dicarboxylic acid chlorides |
Publications (1)
Publication Number | Publication Date |
---|---|
GB414570A true GB414570A (en) | 1934-08-09 |
Family
ID=10379313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3558033A Expired GB414570A (en) | 1933-12-18 | 1933-12-18 | Manufacture of aromatic dicarboxylic acid chlorides |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB414570A (en) |
-
1933
- 1933-12-18 GB GB3558033A patent/GB414570A/en not_active Expired
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