GB1206477A - Process for preparing pyrocarbonate esters - Google Patents
Process for preparing pyrocarbonate estersInfo
- Publication number
- GB1206477A GB1206477A GB4956967A GB4956967A GB1206477A GB 1206477 A GB1206477 A GB 1206477A GB 4956967 A GB4956967 A GB 4956967A GB 4956967 A GB4956967 A GB 4956967A GB 1206477 A GB1206477 A GB 1206477A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthalene
- chloride
- esters
- pyrocarbonate
- disulphonyl
- 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
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/06—Preparation of esters of carbonic or haloformic acids from organic carbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
Abstract
1,206,477. Pyrocarbonate esters. SHIONOGI & CO. Ltd. 1 Nov., 1967, No. 49569/67. Addition to 1,130,271. Heading C2C. Esters of pyrocarbonic acid are prepared by reacting 1 mole of a naphthalene sulphonyl chloride of formula in which one or more of the hydrogen atoms may be substituted with a halogen atom or a nitro group with about 2 moles of one or more alkali metal carbonate half esters of general formula MeOCOOR<SP>1</SP> in which Me is sodium or potassium, and R<SP>1</SP> is a C 1 -C 3 alkyl group or an aralkyl group, e.g. a benzyl group. In the examples diethyl pyrocarbonate [O(COOC 2 H 5 ) 2 ] is prepared by reacting (a) naphthalene-1-sulphonyl chloride; (b) naphthalene-2-sulphonyl chloride; (c) naphthalene-1,5-disulphonyl chloride; (d) naphthalene-2,7-disulphonyl chloride; (e) naphthalene-2,6-disulphonyl chloride, and (f) naphthalene-1,3,6-trisulphonyl chloride.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4956967A GB1206477A (en) | 1967-11-01 | 1967-11-01 | Process for preparing pyrocarbonate esters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4956967A GB1206477A (en) | 1967-11-01 | 1967-11-01 | Process for preparing pyrocarbonate esters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1206477A true GB1206477A (en) | 1970-09-23 |
Family
ID=10452768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4956967A Expired GB1206477A (en) | 1967-11-01 | 1967-11-01 | Process for preparing pyrocarbonate esters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1206477A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0468404A2 (en) * | 1990-07-23 | 1992-01-29 | Sumitomo Chemical Company, Limited | Process for preparing di-tert.-butyl dicarbonate |
-
1967
- 1967-11-01 GB GB4956967A patent/GB1206477A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0468404A2 (en) * | 1990-07-23 | 1992-01-29 | Sumitomo Chemical Company, Limited | Process for preparing di-tert.-butyl dicarbonate |
EP0468404A3 (en) * | 1990-07-23 | 1992-04-22 | Sumitomo Chemical Company, Limited | Process for preparing di-tert.-butyl dicarbonate |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |