GB190012585A - Improved Manufacture of Saccharine and of Intermediate Products therefor. - Google Patents
Improved Manufacture of Saccharine and of Intermediate Products therefor.Info
- Publication number
- GB190012585A GB190012585A GB190012585DA GB190012585A GB 190012585 A GB190012585 A GB 190012585A GB 190012585D A GB190012585D A GB 190012585DA GB 190012585 A GB190012585 A GB 190012585A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methyl
- solution
- produced
- sulphonic
- benzoate
- 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
Abstract
12,585. Imray, O., [Basle Chemical Works]. July 12. Sulphonic chlorides of the formula in which X represents an alkyl group such as methyl or ethyl, are produced by the process described in Specification No. 4525, A.D. 1900. For example, the o-sulphonic chloride of methyl benzoate is obtained by acting upon methyl-o-sulphonic-benzoate in caustic alkali solution with chlorine, and filtering off the insoluble product. It melts at 64‹-65‹ C. Alternatively, methyl-osulphinic - benzoate suspended in water may be used. Sulphonamides are produced directly from the corresponding sulphinic acids by dissolving them in excess of concentrated ammonia, diluting with alcohol, and passing chlorine into the solution at 35‹-40‹ C. An example is given in which o-toluenesulphonamide is thus produced from o-toluene sulphinic acid. Saccharin is produced in the form of its ammonium salt by acting with chlorine upon an ethereal salt of o-sulphinic-benzoic acid in a solution containing an excess of ammonia. The solution is evaporated, the ammonium salt is extracted by alcohol, and saccharin is precipitated from an aqueous solution of the ammonium salt by hydrochloric acid. Part of the ammonia may be replaced by another alkali.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190012585T | 1900-07-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190012585A true GB190012585A (en) | 1900-08-18 |
Family
ID=32362742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190012585D Expired GB190012585A (en) | 1900-07-12 | 1900-07-12 | Improved Manufacture of Saccharine and of Intermediate Products therefor. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190012585A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2667503A (en) * | 1951-07-27 | 1954-01-26 | Maumee Dev Company | Method of preparing ortho sulfonyl chloride benzoic acid esters |
US2745840A (en) * | 1953-04-08 | 1956-05-15 | Monsanto Chemicals | Recovery and purification of saccharin |
US4464537A (en) * | 1980-11-24 | 1984-08-07 | Basf Aktiengesellschaft | Preparation of saccharin |
-
1900
- 1900-07-12 GB GB190012585D patent/GB190012585A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2667503A (en) * | 1951-07-27 | 1954-01-26 | Maumee Dev Company | Method of preparing ortho sulfonyl chloride benzoic acid esters |
US2745840A (en) * | 1953-04-08 | 1956-05-15 | Monsanto Chemicals | Recovery and purification of saccharin |
US4464537A (en) * | 1980-11-24 | 1984-08-07 | Basf Aktiengesellschaft | Preparation of saccharin |
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