GB1457108A - Preparation of pyrocatechol derivatives and intermediates used - Google Patents
Preparation of pyrocatechol derivatives and intermediates usedInfo
- Publication number
- GB1457108A GB1457108A GB4940473A GB4940473A GB1457108A GB 1457108 A GB1457108 A GB 1457108A GB 4940473 A GB4940473 A GB 4940473A GB 4940473 A GB4940473 A GB 4940473A GB 1457108 A GB1457108 A GB 1457108A
- Authority
- GB
- United Kingdom
- Prior art keywords
- halogen
- substituted
- denotes
- alkyl
- formula
- 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
- C07C43/00—Ethers; Compounds having groups, groups or groups
- C07C43/02—Ethers
- C07C43/20—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring
- C07C43/23—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring containing hydroxy or O-metal groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1457108 Preparation of pyrocatechol derivatives BASF AG 24 Oct 1973 [25 Oct 1972] 49404/73 Heading C2C Pyrocatechols ethers of formula where R denotes alkyl which may be substituted by halogen, alkenyl which may be substituted by halogen, alkynyl which may be substituted by halogen, or aralkyl are obtained by cleaving in an acid medium a compound of formula where R has the above meaning and R<SP>1</SP> denotes H or (C 1-4 ) alkyl; R<SP>2</SP> denotes H, benzyl, (C 1-4 ) alkyl which may be substituted with halogen, -OCH 3 or -OC 2 H 5 ; R<SP>3</SP> denotes (C 1-4 ) alkyl, cycloalkyl, #-chloroethyl, alkoxyalkyl, phenyl, (C 2-4 ) alkenyl, (C 2-4 ) alkynyl, or acyl or R<SP>1</SP> and R<SP>2</SP>, together with the carbon atoms whose substituents they are, and R<SP>1</SP> and R<SP>3</SP>, together with the carbon and oxygen atom whose substituents they are, form a 5- or 6-membered ring. The invention also comprises compounds of Formula II wherein R, R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> have the meanings given above with the proviso that when R is methyl, R<SP>1</SP> and R<SP>2</SP> are not simultaneously hydrogen.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2252250A DE2252250A1 (en) | 1972-10-25 | 1972-10-25 | PROCESS FOR THE PRODUCTION OF CATECHINE DERIVATIVES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1457108A true GB1457108A (en) | 1976-12-01 |
Family
ID=5859991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4940473A Expired GB1457108A (en) | 1972-10-25 | 1973-10-24 | Preparation of pyrocatechol derivatives and intermediates used |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPS4972223A (en) |
| AR (1) | AR208656A1 (en) |
| BE (1) | BE805653A (en) |
| BR (1) | BR7308252D0 (en) |
| CA (1) | CA1025888A (en) |
| CH (1) | CH602533A5 (en) |
| CS (1) | CS198129B2 (en) |
| DD (1) | DD107250A5 (en) |
| DE (1) | DE2252250A1 (en) |
| FR (1) | FR2204602B1 (en) |
| GB (1) | GB1457108A (en) |
| IL (1) | IL43407A (en) |
| IT (1) | IT997658B (en) |
| NL (1) | NL7314702A (en) |
| SU (1) | SU501665A3 (en) |
| TR (1) | TR17990A (en) |
| ZA (1) | ZA738186B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018101457A1 (en) * | 2018-01-23 | 2019-07-25 | Eppendorf Ag | Method and device for monitoring the speed of an element |
-
1972
- 1972-10-25 DE DE2252250A patent/DE2252250A1/en not_active Withdrawn
-
1973
- 1973-10-01 DD DD173806A patent/DD107250A5/xx unknown
- 1973-10-04 BE BE136334A patent/BE805653A/en unknown
- 1973-10-09 IL IL43407A patent/IL43407A/en unknown
- 1973-10-09 CA CA182,869A patent/CA1025888A/en not_active Expired
- 1973-10-09 TR TR17990A patent/TR17990A/en unknown
- 1973-10-19 JP JP48117014A patent/JPS4972223A/ja active Pending
- 1973-10-23 ZA ZA738186A patent/ZA738186B/en unknown
- 1973-10-23 BR BR8252/73A patent/BR7308252D0/en unknown
- 1973-10-24 CH CH1498873A patent/CH602533A5/xx not_active IP Right Cessation
- 1973-10-24 GB GB4940473A patent/GB1457108A/en not_active Expired
- 1973-10-24 SU SU1965923A patent/SU501665A3/en active
- 1973-10-24 IT IT53329/73A patent/IT997658B/en active
- 1973-10-24 CS CS737336A patent/CS198129B2/en unknown
- 1973-10-25 NL NL7314702A patent/NL7314702A/xx not_active Application Discontinuation
- 1973-10-25 FR FR7338132A patent/FR2204602B1/fr not_active Expired
- 1973-10-25 AR AR250686A patent/AR208656A1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DD107250A5 (en) | 1974-07-20 |
| TR17990A (en) | 1976-08-20 |
| CS198129B2 (en) | 1980-05-30 |
| JPS4972223A (en) | 1974-07-12 |
| IL43407A (en) | 1977-01-31 |
| IT997658B (en) | 1975-12-30 |
| FR2204602B1 (en) | 1977-03-11 |
| IL43407A0 (en) | 1974-01-14 |
| SU501665A3 (en) | 1976-01-30 |
| CH602533A5 (en) | 1978-07-31 |
| AR208656A1 (en) | 1977-02-28 |
| NL7314702A (en) | 1974-04-29 |
| BE805653A (en) | 1974-04-04 |
| BR7308252D0 (en) | 1974-07-18 |
| DE2252250A1 (en) | 1974-05-02 |
| ZA738186B (en) | 1974-10-30 |
| AU6122973A (en) | 1975-04-10 |
| FR2204602A1 (en) | 1974-05-24 |
| CA1025888A (en) | 1978-02-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |