GB1337377A - Process for the preparation of ethyl 8-hydroxy-1,3-dioxolo - Google Patents
Process for the preparation of ethyl 8-hydroxy-1,3-dioxoloInfo
- Publication number
- GB1337377A GB1337377A GB2984772A GB2984772A GB1337377A GB 1337377 A GB1337377 A GB 1337377A GB 2984772 A GB2984772 A GB 2984772A GB 2984772 A GB2984772 A GB 2984772A GB 1337377 A GB1337377 A GB 1337377A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- dioxolo
- hydroxy
- ethyl
- preparation
- 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
- C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
- C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
- C07D491/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/44—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D317/46—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems condensed with one six-membered ring
- C07D317/48—Methylenedioxybenzenes or hydrogenated methylenedioxybenzenes, unsubstituted on the hetero ring
- C07D317/62—Methylenedioxybenzenes or hydrogenated methylenedioxybenzenes, unsubstituted on the hetero ring 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 atoms of the carbocyclic ring
- C07D317/66—Nitrogen atoms not forming part of a nitro radical
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Quinoline Compounds (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
1337377 Dioxoloquinoline carboxylic acid ester preparation WARNER LAMBERT CO 26 June 1972 [20 July l9 29847/72 Heading C2C Ethyl 8 - hydroxy - 1,3 - dioxolo[4,5-g]- quinoline-7-carboxylate is prepared by (a) reacting ethanol and P 2 O 5 in xylene at below 120‹ C.; (b) adding diethyl (3,4-methylenedioxyphenyl)-aminomethylene malonate; (c) heating the mixture at 138-140‹ C. for one hour; (d) cooling the mixture; (e) pouring the mixture into a base and (f) recovering the precipitate.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16445171A | 1971-07-20 | 1971-07-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1337377A true GB1337377A (en) | 1973-11-14 |
Family
ID=22594538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2984772A Expired GB1337377A (en) | 1971-07-20 | 1972-06-26 | Process for the preparation of ethyl 8-hydroxy-1,3-dioxolo |
Country Status (8)
Country | Link |
---|---|
AU (1) | AU466435B2 (en) |
CA (1) | CA966135A (en) |
DE (1) | DE2227743C3 (en) |
FI (1) | FI50973C (en) |
FR (1) | FR2146779A5 (en) |
GB (1) | GB1337377A (en) |
NO (1) | NO134987C (en) |
SE (1) | SE394437B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4284777A (en) * | 1978-12-26 | 1981-08-18 | E. I. Du Pont De Nemours And Company | Antibacterials: 1-difluoromethyl-6,7-methylenedioxy-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid and its esters |
-
1972
- 1972-06-07 DE DE19722227743 patent/DE2227743C3/en not_active Expired
- 1972-06-07 FI FI161372A patent/FI50973C/en active
- 1972-06-21 CA CA145,330A patent/CA966135A/en not_active Expired
- 1972-06-26 GB GB2984772A patent/GB1337377A/en not_active Expired
- 1972-07-10 AU AU44412/72A patent/AU466435B2/en not_active Expired
- 1972-07-14 SE SE934672A patent/SE394437B/en unknown
- 1972-07-17 FR FR7225683A patent/FR2146779A5/fr not_active Expired
- 1972-07-19 NO NO259172A patent/NO134987C/no unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4284777A (en) * | 1978-12-26 | 1981-08-18 | E. I. Du Pont De Nemours And Company | Antibacterials: 1-difluoromethyl-6,7-methylenedioxy-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid and its esters |
Also Published As
Publication number | Publication date |
---|---|
DE2227743A1 (en) | 1973-02-08 |
AU4441272A (en) | 1974-01-17 |
SE394437B (en) | 1977-06-27 |
FR2146779A5 (en) | 1973-03-02 |
DE2227743C3 (en) | 1974-10-03 |
FI50973C (en) | 1976-09-10 |
DE2227743B2 (en) | 1974-02-21 |
NO134987B (en) | 1976-10-11 |
AU466435B2 (en) | 1975-10-30 |
FI50973B (en) | 1976-05-31 |
CA966135A (en) | 1975-04-15 |
NO134987C (en) | 1977-01-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |