GB1061799A - Improvements in or relating to the preparation of nitrofurfural compounds - Google Patents
Improvements in or relating to the preparation of nitrofurfural compoundsInfo
- Publication number
- GB1061799A GB1061799A GB4410464A GB4410464A GB1061799A GB 1061799 A GB1061799 A GB 1061799A GB 4410464 A GB4410464 A GB 4410464A GB 4410464 A GB4410464 A GB 4410464A GB 1061799 A GB1061799 A GB 1061799A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- diacetate
- nitrofurfural
- ice
- potassium nitrate
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/70—Nitro radicals
- C07D307/71—Nitro radicals attached in position 5
Abstract
5-Nitrofurfural diacetate is made by adding a mixture of furfural diacetate and potassium nitrate to a sulphuric acid monohydrate reaction medium while maintaining the resulting reaction mixture at a temperature not exceeding 10 DEG C., diluting the reaction mixture with ice-water on the completion of nitration, adjusting the pH of the diluted mixture to 3 to 4 and extracting the nitrofurfural diacetate from the mixture, potassium nitrate and furfural diacetate being employed in a molar ratio of up to 1.4: 1. It is preferred to use temperatures below 0 DEG C. and to operate under anaerobic conditions. The term "ice-water" is defined as including the addition of dry ice to the reaction medium. The pH can be suitably adjusted by the addition of sodium carbonate or trisodium phosphate. The product may be finally extracted with ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4410464A GB1061799A (en) | 1964-10-29 | 1964-10-29 | Improvements in or relating to the preparation of nitrofurfural compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4410464A GB1061799A (en) | 1964-10-29 | 1964-10-29 | Improvements in or relating to the preparation of nitrofurfural compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1061799A true GB1061799A (en) | 1967-03-15 |
Family
ID=10431805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4410464A Expired GB1061799A (en) | 1964-10-29 | 1964-10-29 | Improvements in or relating to the preparation of nitrofurfural compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1061799A (en) |
-
1964
- 1964-10-29 GB GB4410464A patent/GB1061799A/en not_active Expired
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