GB843695A - Process for the manufacture of diphenyl ethers - Google Patents
Process for the manufacture of diphenyl ethersInfo
- Publication number
- GB843695A GB843695A GB39253/56A GB3925356A GB843695A GB 843695 A GB843695 A GB 843695A GB 39253/56 A GB39253/56 A GB 39253/56A GB 3925356 A GB3925356 A GB 3925356A GB 843695 A GB843695 A GB 843695A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amino
- group
- acid
- general formula
- hydrogen
- 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
- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
- C07D263/30—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D263/34—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings 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
- C07D263/36—One oxygen atom
- C07D263/42—One oxygen atom attached in position 5
Abstract
The invention comprises compounds of the general formula: <FORM:0843695/IV(b)/1> (wherein X represents an acyl group, R1 a hydrogen atom or an alkyl, aralkyl or acyl group, R2 a hydrogen or iodine atom or an amino, substituted amino or nitro group, and Y a hydrogen atom or a methyl group), and a process for the manufacture of substituted diphenyl ethers wherein 3-iodo-5-nitro-4-hydroxybenzaldehyde is reacted in the presence of a tertiary organic base with an aliphatic or aromatic sulphonic acid halide and the product reacted, without isolation of the ammonium compound formed, with a phenol of the general formula: <FORM:0843695/IV(b)/2> (wherein R1 represents a hydrogen atom or an alkyl, aralkyl or acyl group and R2 and R3 each represent a hydrogen or halogen atom or an amino, substituted amino or nitro group, or R1 may form part of a ring with R2 or R3, the resulting compound of the general formula: <FORM:0843695/IV(b)/3> is condensed with an acylaminoacetic acid, the resulting oxazolone derivative is split up with the aid of an alkali metal alcoholate or an aqueous solution of an alkali to form the corresponding a -acylaminocinnamic acid or ester thereof, the nitro group or groups is or are reduced to an amino group or groups, the latter is or are replaced by iodine by way of the diazonium compound, if desired the double bond in the resulting 3:5-diiodo-4-phenoxyacylaminocinnamic acid derivative is hydrogenated with hydriodic acid and red phosphorus, and, if desired, a further iodine atom is introduced into the 31-position by the action of potassium p-toluenesulphoiodamide in an alkaline medium. Specification 642,159 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE843695X | 1955-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB843695A true GB843695A (en) | 1960-08-10 |
Family
ID=6773855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39253/56A Expired GB843695A (en) | 1955-12-24 | 1956-12-24 | Process for the manufacture of diphenyl ethers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB843695A (en) |
-
1956
- 1956-12-24 GB GB39253/56A patent/GB843695A/en not_active Expired
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